cost.com

cost.com is SSL secured

Free website and domain report on cost.com

Last Updated: 18th March, 2023 Update Now
Overview

Snoop Summary for cost.com

This is a free and comprehensive report about cost.com. Cost.com is hosted in Richardson, Texas in United States on a server with an IP address of 45.33.30.197, where the local currency is USD and English is the local language. Our records indicate that cost.com is owned/operated by Castello Brothers, LLC. Cost.com has the potential to be earning an estimated $1 USD per day from advertising revenue. If cost.com was to be sold it would possibly be worth $773 USD (based on the daily revenue potential of the website over a 24 month period). Cost.com is somewhat popular with an estimated 367 daily unique visitors. This report was last updated 18th March, 2023.

About cost.com

Site Preview: cost.com cost.com
Title:
Description: Computer OEM and New CPUs, Drives, Memory, Computer and more.
Keywords and Tags: hardware, portal sites, pups, software
Related Terms: cpus, processors and cpus
Fav Icon:
Age: Over 26 years old
Domain Created: 18th June, 1997
Domain Updated: 5th October, 2022
Domain Expires: 17th June, 2027
Review

Snoop Score

2/5

Valuation

$773 USD
Note: All valuation figures are estimates.

Popularity

Low
Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank: 3,461,642
Alexa Reach:
SEMrush Rank (US):
SEMrush Authority Score:
Moz Domain Authority: 21
Moz Page Authority: 30

Organic vs Paid (Google Ads)

Traffic

Visitors

Daily Visitors: 367
Monthly Visitors: 11,162
Yearly Visitors: 133,857
Note: All visitors figures are estimates.

Visitors By Country

Revenue

Revenue

Daily Revenue: $1 USD
Monthly Revenue: $32 USD
Yearly Revenue: $381 USD
Note: All revenue figures are estimates.

Revenue By Country

SEO

Backlinks Analysis (SEMrush)

Top New Follow Links

Top Ranking Keywords (US)

Domain Analysis

Value Length
Domain: cost.com 8
Domain Name: cost 4
Extension (TLD): com 3
Expiry Check:

Page Speed Analysis

Average Load Time: 0.47 seconds
Load Time Comparison: Faster than 95% of sites

PageSpeed Insights

Avg. (All Categories) 71
Performance 86
Accessibility 85
Best Practices 83
SEO 80
PWA 22
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: http://www1.cost.com/
Updated: 4th February, 2023
Simulate loading on desktop
86

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for cost.com. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Time to Interactive — 1.4 s
The time taken for the page to become fully interactive.
Cumulative Layout Shift — 0
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

Properly size images
Images can slow down the page's load time. Cost.com should consider serving more appropriate-sized images.
Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Cost.com should consider lazy-loading offscreen and hidden images.
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Cost.com should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Cost.com should consider minifying JS files.
Reduce unused CSS
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Cost.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
Reduce unused JavaScript — Potential savings of 63 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
http://www.google.com/adsense/domains/caf.js?abp=1
54644
32883
https://www.google.com/adsense/domains/caf.js?pac=0
54578
31509
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Initial server response time was short — Root document took 450 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
http://www1.cost.com/?tm=1&subid4=1675514211.0159490000&kw=eCommerce+Shopping+Platform&KW1=Wholesale%20Ecommerce%20Online%20Store&KW2=Membership%20and%20Billing%20Management&KW3=Club%20Membership%20Software&searchbox=0&domainname=0&backfill=0
448.974
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Cost.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
Avoids enormous network payloads — Total size was 179 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
http://www.google.com/adsense/domains/caf.js?abp=1
54644
https://www.google.com/adsense/domains/caf.js?pac=0
54578
http://cost.com/
18403
http://d38psrni17bvxu.cloudfront.net/themes/cleanPeppermintBlack_657d9013/img/arrows.png
11817
http://www1.cost.com/?tm=1&subid4=1675514211.0159490000&kw=eCommerce+Shopping+Platform&KW1=Wholesale%20Ecommerce%20Online%20Store&KW2=Membership%20and%20Billing%20Management&KW3=Club%20Membership%20Software&searchbox=0&domainname=0&backfill=0
7968
https://js-agent.newrelic.com/569.95d4308d-1222.js
3901
https://js-agent.newrelic.com/859.95d4308d-1222.js
3703
https://js-agent.newrelic.com/466.95d4308d-1222.js
3488
https://js-agent.newrelic.com/244.95d4308d-1222.js
3335
https://www.google.com/afs/ads?adtest=off&psid=6016880802&pcsa=false&channel=000002%2Cbucket011&client=dp-teaminternet12_3ph&r=m&hl=en&rpbu=http%3A%2F%2Fwww1.cost.com%2F%3Fts%3DfENsZWFuUGVwcGVybWludEJsYWNrfHw1Y2U4NHxidWNrZXQwMTF8fHx8fHw2M2RlNTE2MzZmYTQxfHx8MTY3NTUxNDIxMS40NjcxfGI2NjAyODA3MDA2NjY5NTEyZmU4MGUzMjk0ODhjYTI0ZTY5OTkxODR8fHx8fDF8fDB8MHx8fHwxfHx8fHwwfDB8fHx8fHx8fHx8MHwwfHwwfHx8MHwwfFcxMD18fDB8ZXlKemRXSnBaRFFpT2lJeE5qYzFOVEUwTWpFeExqQXhOVGswT1RBd01EQWlmUT09fGZmNWQzYzg3NzhlOGU1Y2I1OTNhNjBkMjM3NmNiM2ZlNTRjOWQwYjF8MHxkcC10ZWFtaW50ZXJuZXQxMl8zcGh8MHww&terms=Wholesale%20Ecommerce%20Online%20Store%2CMembership%20and%20Billing%20Management%2CClub%20Membership%20Software&max_radlink_len=40&type=3&uiopt=true&swp=as-drid-2483796446137945&oe=UTF-8&ie=UTF-8&fexp=21404&format=r3%7Cs&nocache=3731675514212029&num=0&output=afd_ads&domain_name=www1.cost.com&v=3&bsl=8&pac=0&u_his=2&u_tz=-480&dt=1675514212031&u_w=800&u_h=600&biw=1350&bih=940&psw=1350&psh=754&frm=0&cl=503972142&uio=--&cont=tc&jsid=caf&jsv=503972142&rurl=http%3A%2F%2Fwww1.cost.com%2F%3Ftm%3D1%26subid4%3D1675514211.0159490000%26kw%3DeCommerce%2BShopping%2BPlatform%26KW1%3DWholesale%2520Ecommerce%2520Online%2520Store%26KW2%3DMembership%2520and%2520Billing%2520Management%26KW3%3DClub%2520Membership%2520Software%26searchbox%3D0%26domainname%3D0%26backfill%3D0&adbw=master-1%3A530
3218
Avoids an excessive DOM size — 25 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
25
Maximum DOM Depth
7
Maximum Child Elements
12
Avoid chaining critical requests
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Cost.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
JavaScript execution time — 1.0 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
http://www1.cost.com/?tm=1&subid4=1675514211.0159490000&kw=eCommerce+Shopping+Platform&KW1=Wholesale%20Ecommerce%20Online%20Store&KW2=Membership%20and%20Billing%20Management&KW3=Club%20Membership%20Software&searchbox=0&domainname=0&backfill=0
463.481
444.001
4.206
http://www.google.com/adsense/domains/caf.js?abp=1
442.39
433.248
3.3
https://www.google.com/adsense/domains/caf.js?pac=0
118.424
77.703
2.622
Minimizes main-thread work — 1.1 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
1002.029
Other
79.218
Script Parsing & Compilation
17.754
Rendering
16.876
Style & Layout
11.25
Parse HTML & CSS
8.434
All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 27 requests • 179 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
27
183696
Script
13
135339
Document
3
29589
Image
5
15587
Other
6
3181
Stylesheet
0
0
Media
0
0
Font
0
0
Third-party
21
154144
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Element
Avoid large layout shifts
Below is a list of all DOM elements that contribute to the CLS of the page.
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 2 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
http://www.google.com/adsense/domains/caf.js?abp=1
984
420
http://www.google.com/adsense/domains/caf.js?abp=1
760
224
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Image elements have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of cost.com on mobile screens.
Avoids `unload` event listeners
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Audits

Network Requests
Below is a list of network requests that were made during page load.
URL Protocol Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://cost.com/
http/1.1
0
170.24200002197
18403
47282
200
text/html
Document
https://js-agent.newrelic.com/859.95d4308d-1222.js
h2
206.80399995763
222.88100002334
3703
6657
200
application/javascript
Script
http://cost.com/?gp=1&js=1&uuid=1675514210.0063158417&other_args=eyJ1cmkiOiAiLyIsICJhcmdzIjogIiIsICJyZWZlcmVyIjogIiIsICJhY2NlcHQiOiAidGV4dC9odG1sLGFwcGxpY2F0aW9uL3hodG1sK3htbCxhcHBsaWNhdGlvbi94bWw7cT0wLjksaW1hZ2UvYXZpZixpbWFnZS93ZWJwLGltYWdlL2FwbmcsKi8qO3E9MC44LGFwcGxpY2F0aW9uL3NpZ25lZC1leGNoYW5nZTt2PWIzO3E9MC45In0=
http/1.1
210.05799993873
363.75200003386
1100
0
302
text/html
https://js-agent.newrelic.com/569.95d4308d-1222.js
h2
229.4609999517
243.90899995342
3901
7513
200
application/javascript
Script
https://js-agent.newrelic.com/620.95d4308d-1222.js
h2
229.58799998742
250.50800002646
2070
2989
200
application/javascript
Script
https://js-agent.newrelic.com/457.95d4308d-1222.js
h2
229.98599999119
248.49699996412
2681
4809
200
application/javascript
Script
https://js-agent.newrelic.com/41.95d4308d-1222.js
h2
231.83399997652
248.20100003853
1178
828
200
application/javascript
Script
https://js-agent.newrelic.com/244.95d4308d-1222.js
h2
232.08099999465
249.71699994057
3335
6871
200
application/javascript
Script
https://js-agent.newrelic.com/736.95d4308d-1222.js
h2
232.87299997173
249.06900001224
2860
4688
200
application/javascript
Script
https://js-agent.newrelic.com/142.95d4308d-1222.js
h2
233.07399998885
249.44000004325
1606
2014
200
application/javascript
Script
https://js-agent.newrelic.com/466.95d4308d-1222.js
h2
233.23499993421
248.76899993978
3488
6842
200
application/javascript
Script
https://bam.nr-data.net/1/0d385ba8a0?a=31561968&v=1222.PROD&to=NlVXNhBWW0IEAEENXQ8fcxcMVEFYCg0aA1sAXkESA1lRUEsOXAdADkNQEBReVlQWTUYIWwxvWQ0DU1BD&rst=264&ck=0&s=0&ref=http://cost.com/&be=188&fe=18&dc=17&af=err,xhr,stn,ins&perf=%7B%22timing%22:%7B%22of%22:1675514210736,%22n%22:0,%22f%22:0,%22dn%22:0,%22dne%22:0,%22c%22:0,%22ce%22:0,%22rq%22:0,%22rp%22:171,%22rpe%22:171,%22dl%22:175,%22di%22:204,%22ds%22:204,%22de%22:205,%22dc%22:205,%22l%22:205,%22le%22:208%7D,%22navigation%22:%7B%7D%7D&jsonp=NREUM.setToken
http/1.1
265.72200004011
421.19599995203
532
49
200
text/javascript
Script
http://www1.cost.com/?tm=1&subid4=1675514211.0159490000&kw=eCommerce+Shopping+Platform&KW1=Wholesale%20Ecommerce%20Online%20Store&KW2=Membership%20and%20Billing%20Management&KW3=Club%20Membership%20Software&searchbox=0&domainname=0&backfill=0
http/1.1
364.29099994712
812.27500003297
7968
19052
200
text/html
Document
https://bam.nr-data.net/jserrors/1/0d385ba8a0?a=31561968&v=1222.PROD&to=NlVXNhBWW0IEAEENXQ8fcxcMVEFYCg0aA1sAXkESA1lRUEsOXAdADkNQEBReVlQWTUYIWwxvWQ0DU1BD&rst=820&ck=0&s=0&ref=http://cost.com/
819.1419999348
0
0
-1
Ping
https://bam.nr-data.net/events/1/0d385ba8a0?a=31561968&v=1222.PROD&to=NlVXNhBWW0IEAEENXQ8fcxcMVEFYCg0aA1sAXkESA1lRUEsOXAdADkNQEBReVlQWTUYIWwxvWQ0DU1BD&rst=822&ck=0&s=0&ref=http://cost.com/
820.59100002516
0
0
-1
Ping
http://www.google.com/adsense/domains/caf.js?abp=1
http/1.1
825.20299998578
838.67199998349
54644
147949
200
text/javascript
Script
http://www1.cost.com/track.php?domain=cost.com&toggle=browserjs&uid=MTY3NTUxNDIxMS40NTczOjA0MTUwYTVkMjFmNWI1ZDk4ZWEzYTViZWVjNzhjOTEzM2E3ODQzMDQ2OTk5YzYxYTlhYWI0OGIxMTE0OTRiNDM6NjNkZTUxNjM2ZmE2OA%3D%3D
http/1.1
865.20799994469
1281.4690000378
608
0
200
text/html
XHR
http://www1.cost.com/ls.php
http/1.1
1284.1359999729
1718.320999993
863
0
201
text/javascript
XHR
https://partner.googleadservices.com/gampad/cookie.js?domain=www1.cost.com&client=dp-teaminternet12_3ph&product=SAS&callback=__sasCookie
h2
1289.3430000404
1295.2550000045
763
356
200
text/javascript
Script
http://d38psrni17bvxu.cloudfront.net/themes/cleanPeppermintBlack_657d9013/img/arrows.png
http/1.1
1296.2109999498
1312.0649999473
11817
11375
200
image/png
Image
https://www.google.com/afs/ads?adtest=off&psid=6016880802&pcsa=false&channel=000002%2Cbucket011&client=dp-teaminternet12_3ph&r=m&hl=en&rpbu=http%3A%2F%2Fwww1.cost.com%2F%3Fts%3DfENsZWFuUGVwcGVybWludEJsYWNrfHw1Y2U4NHxidWNrZXQwMTF8fHx8fHw2M2RlNTE2MzZmYTQxfHx8MTY3NTUxNDIxMS40NjcxfGI2NjAyODA3MDA2NjY5NTEyZmU4MGUzMjk0ODhjYTI0ZTY5OTkxODR8fHx8fDF8fDB8MHx8fHwxfHx8fHwwfDB8fHx8fHx8fHx8MHwwfHwwfHx8MHwwfFcxMD18fDB8ZXlKemRXSnBaRFFpT2lJeE5qYzFOVEUwTWpFeExqQXhOVGswT1RBd01EQWlmUT09fGZmNWQzYzg3NzhlOGU1Y2I1OTNhNjBkMjM3NmNiM2ZlNTRjOWQwYjF8MHxkcC10ZWFtaW50ZXJuZXQxMl8zcGh8MHww&terms=Wholesale%20Ecommerce%20Online%20Store%2CMembership%20and%20Billing%20Management%2CClub%20Membership%20Software&max_radlink_len=40&type=3&uiopt=true&swp=as-drid-2483796446137945&oe=UTF-8&ie=UTF-8&fexp=21404&format=r3%7Cs&nocache=3731675514212029&num=0&output=afd_ads&domain_name=www1.cost.com&v=3&bsl=8&pac=0&u_his=2&u_tz=-480&dt=1675514212031&u_w=800&u_h=600&biw=1350&bih=940&psw=1350&psh=754&frm=0&cl=503972142&uio=--&cont=tc&jsid=caf&jsv=503972142&rurl=http%3A%2F%2Fwww1.cost.com%2F%3Ftm%3D1%26subid4%3D1675514211.0159490000%26kw%3DeCommerce%2BShopping%2BPlatform%26KW1%3DWholesale%2520Ecommerce%2520Online%2520Store%26KW2%3DMembership%2520and%2520Billing%2520Management%26KW3%3DClub%2520Membership%2520Software%26searchbox%3D0%26domainname%3D0%26backfill%3D0&adbw=master-1%3A530
h2
1304.6209999593
1424.6709999861
3218
7626
200
text/html
Document
https://www.google.com/adsense/domains/caf.js?pac=0
h2
1436.4409999689
1450.9410000173
54578
147922
200
text/javascript
Script
https://afs.googleusercontent.com/ad_icons/standard/publisher_icon_image/search.svg?c=%23ffffff
h2
1487.7100000158
1495.0099999551
1070
391
200
image/svg+xml
Image
https://afs.googleusercontent.com/ad_icons/standard/publisher_icon_image/chevron.svg?c=%23ffffff
h2
1487.974000047
1493.8590000384
974
200
200
image/svg+xml
Image
http://www1.cost.com/track.php?domain=cost.com&caf=1&toggle=answercheck&answer=yes&uid=MTY3NTUxNDIxMS40NTczOjA0MTUwYTVkMjFmNWI1ZDk4ZWEzYTViZWVjNzhjOTEzM2E3ODQzMDQ2OTk5YzYxYTlhYWI0OGIxMTE0OTRiNDM6NjNkZTUxNjM2ZmE2OA%3D%3D
http/1.1
1491.3889999734
1908.2550000167
610
0
200
text/html
XHR
https://www.google.com/afs/gen_204?client=dp-teaminternet12_3ph&output=uds_ads_only&zx=yhxtjn9vwu0m&aqid=ZFHeY-zFBofAowathJwI&psid=6016880802&pbt=bs&adbx=410&adby=97&adbh=497&adbw=530&adbah=160%2C160%2C160&adbn=master-1&eawp=partner-dp-teaminternet12_3ph&errv=503972142&csala=11%7C0%7C137%7C32%7C483&lle=0&llm=1000&ifv=1&usr=1
h2
3455.2929999772
3489.5280000055
1044
0
204
text/html
Image
https://www.google.com/afs/gen_204?client=dp-teaminternet12_3ph&output=uds_ads_only&zx=kyfv9scyrw6m&aqid=ZFHeY-zFBofAowathJwI&psid=6016880802&pbt=bv&adbx=410&adby=97&adbh=497&adbw=530&adbah=160%2C160%2C160&adbn=master-1&eawp=partner-dp-teaminternet12_3ph&errv=503972142&csala=11%7C0%7C137%7C32%7C483&lle=0&llm=1000&ifv=1&usr=1
h2
3956.0839999467
3986.9130000006
682
0
204
text/html
Image
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
-34.145
7.552
-26.353
20.123
18.34
7.738
52.358
6.443
610.167
11.783
643.491
8.284
651.806
447.136
1220.281
8.169
1256.032
25.353
1281.958
419.606
1701.601
5.259
1711.045
5.216
1716.278
8.795
1726
13.894
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Metrics

First Contentful Paint — 1.2 s
The time taken for the first image or text on the page to be rendered.
Speed Index — 1.5 s
The time taken for the page contents to be visibly populated.
Total Blocking Time — 170 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).
Largest Contentful Paint — 1.5 s
The timing of the largest text or image that is painted.

Audits

Max Potential First Input Delay — 220 ms
Users could experience a delay when interacting with the page.
First Meaningful Paint — 1.2 s
The time taken for the primary content of the page to be rendered.

Other

Eliminate render-blocking resources — Potential savings of 530 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Cost.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
http://www.google.com/adsense/domains/caf.js?abp=1
54644
270
Avoid multiple page redirects — Potential savings of 300 ms
Redirects can cause additional delays before the page can begin loading. Cost.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://cost.com/
230
http://cost.com/?gp=1&js=1&uuid=1675514210.0063158417&other_args=eyJ1cmkiOiAiLyIsICJhcmdzIjogIiIsICJyZWZlcmVyIjogIiIsICJhY2NlcHQiOiAidGV4dC9odG1sLGFwcGxpY2F0aW9uL3hodG1sK3htbCxhcHBsaWNhdGlvbi94bWw7cT0wLjksaW1hZ2UvYXZpZixpbWFnZS93ZWJwLGltYWdlL2FwbmcsKi8qO3E9MC44LGFwcGxpY2F0aW9uL3NpZ25lZC1leGNoYW5nZTt2PWIzO3E9MC45In0=
70
http://www1.cost.com/?tm=1&subid4=1675514211.0159490000&kw=eCommerce+Shopping+Platform&KW1=Wholesale%20Ecommerce%20Online%20Store&KW2=Membership%20and%20Billing%20Management&KW3=Club%20Membership%20Software&searchbox=0&domainname=0&backfill=0
0
Preload Largest Contentful Paint image — Potential savings of 190 ms
It is recommended to preload images used by LCP elements, to improve LCP time.
URL Potential Savings (Ms)
http://d38psrni17bvxu.cloudfront.net/themes/cleanPeppermintBlack_657d9013/img/arrows.png
190
Serve static assets with an efficient cache policy — 13 resources found
Cost.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
http://d38psrni17bvxu.cloudfront.net/themes/cleanPeppermintBlack_657d9013/img/arrows.png
0
11817
https://bam.nr-data.net/1/0d385ba8a0?a=31561968&v=1222.PROD&to=NlVXNhBWW0IEAEENXQ8fcxcMVEFYCg0aA1sAXkESA1lRUEsOXAdADkNQEBReVlQWTUYIWwxvWQ0DU1BD&rst=264&ck=0&s=0&ref=http://cost.com/&be=188&fe=18&dc=17&af=err,xhr,stn,ins&perf=%7B%22timing%22:%7B%22of%22:1675514210736,%22n%22:0,%22f%22:0,%22dn%22:0,%22dne%22:0,%22c%22:0,%22ce%22:0,%22rq%22:0,%22rp%22:171,%22rpe%22:171,%22dl%22:175,%22di%22:204,%22ds%22:204,%22de%22:205,%22dc%22:205,%22l%22:205,%22le%22:208%7D,%22navigation%22:%7B%7D%7D&jsonp=NREUM.setToken
0
532
https://js-agent.newrelic.com/569.95d4308d-1222.js
7200000
3901
https://js-agent.newrelic.com/859.95d4308d-1222.js
7200000
3703
https://js-agent.newrelic.com/466.95d4308d-1222.js
7200000
3488
https://js-agent.newrelic.com/244.95d4308d-1222.js
7200000
3335
https://js-agent.newrelic.com/736.95d4308d-1222.js
7200000
2860
https://js-agent.newrelic.com/457.95d4308d-1222.js
7200000
2681
https://js-agent.newrelic.com/620.95d4308d-1222.js
7200000
2070
https://js-agent.newrelic.com/142.95d4308d-1222.js
7200000
1606
https://js-agent.newrelic.com/41.95d4308d-1222.js
7200000
1178
https://afs.googleusercontent.com/ad_icons/standard/publisher_icon_image/search.svg?c=%23ffffff
82800000
1070
https://afs.googleusercontent.com/ad_icons/standard/publisher_icon_image/chevron.svg?c=%23ffffff
82800000
974

Other

Reduce the impact of third-party code — Third-party code blocked the main thread for 370 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
114166
367.969
25354
0
763
0
85

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of cost.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Cost.com may provide assistance to deaf or hearing-impaired users with captions on videos.

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements

Names and labels

`<frame>` or `<iframe>` elements do not have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Failing Elements

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
83

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that cost.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids front-end JavaScript libraries with known security vulnerabilities
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
No CSP found in enforcement mode
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 8 insecure requests found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://cost.com/
Allowed
http://cost.com/?gp=1&js=1&uuid=1675514210.0063158417&other_args=eyJ1cmkiOiAiLyIsICJhcmdzIjogIiIsICJyZWZlcmVyIjogIiIsICJhY2NlcHQiOiAidGV4dC9odG1sLGFwcGxpY2F0aW9uL3hodG1sK3htbCxhcHBsaWNhdGlvbi94bWw7cT0wLjksaW1hZ2UvYXZpZixpbWFnZS93ZWJwLGltYWdlL2FwbmcsKi8qO3E9MC44LGFwcGxpY2F0aW9uL3NpZ25lZC1leGNoYW5nZTt2PWIzO3E9MC45In0=
Allowed
http://www1.cost.com/?tm=1&subid4=1675514211.0159490000&kw=eCommerce+Shopping+Platform&KW1=Wholesale%20Ecommerce%20Online%20Store&KW2=Membership%20and%20Billing%20Management&KW3=Club%20Membership%20Software&searchbox=0&domainname=0&backfill=0
Allowed
http://www.google.com/adsense/domains/caf.js?abp=1
Allowed
http://www1.cost.com/track.php?domain=cost.com&toggle=browserjs&uid=MTY3NTUxNDIxMS40NTczOjA0MTUwYTVkMjFmNWI1ZDk4ZWEzYTViZWVjNzhjOTEzM2E3ODQzMDQ2OTk5YzYxYTlhYWI0OGIxMTE0OTRiNDM6NjNkZTUxNjM2ZmE2OA%3D%3D
Allowed
http://www1.cost.com/ls.php
Allowed
http://d38psrni17bvxu.cloudfront.net/themes/cleanPeppermintBlack_657d9013/img/arrows.png
Allowed
http://www1.cost.com/track.php?domain=cost.com&caf=1&toggle=answercheck&answer=yes&uid=MTY3NTUxNDIxMS40NTczOjA0MTUwYTVkMjFmNWI1ZDk4ZWEzYTViZWVjNzhjOTEzM2E3ODQzMDQ2OTk5YzYxYTlhYWI0OGIxMTE0OTRiNDM6NjNkZTUxNjM2ZmE2OA%3D%3D
Allowed

Audits

Uses deprecated APIs — 1 warning found
Avoid deprecated APIs which will eventually be removed the browser.
Deprecation / Warning Source
Synchronous `XMLHttpRequest` on the main thread is deprecated because of its detrimental effects to the end user’s experience. For more help, check https://xhr.spec.whatwg.org/.
80

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for cost.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of cost.com on mobile screens.
Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Document does not have a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.

Crawling and Indexing

Links are not crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
22

PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of cost.com. This includes details about web app manifests.

PWA Optimized

Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of cost.com on mobile screens.

Installable

Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
Failure reason
No manifest was fetched

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Does not provide a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Avg. (All Categories) 70
Performance 0
Accessibility 85
Best Practices 83
SEO 83
PWA 30
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: http://www1.cost.com/
Updated: 4th February, 2023
Simulate loading on mobile
0

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for cost.com. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Cumulative Layout Shift — 0
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

Properly size images
Images can slow down the page's load time. Cost.com should consider serving more appropriate-sized images.
Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Cost.com should consider lazy-loading offscreen and hidden images.
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Cost.com should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Cost.com should consider minifying JS files.
Reduce unused CSS
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Cost.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Initial server response time was short — Root document took 320 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
http://www1.cost.com/?tm=1&subid4=1675514230.0160340000&kw=eCommerce+Shopping+Platform&KW1=Wholesale%20Ecommerce%20Online%20Store&KW2=Membership%20and%20Billing%20Management&KW3=Club%20Membership%20Software&searchbox=0&domainname=0&backfill=0
321.282
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Cost.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
Avoids enormous network payloads — Total size was 220 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
http://www.google.com/adsense/domains/caf.js?abp=1
54669
https://www.google.com/adsense/domains/caf.js?pac=0
54571
http://d38psrni17bvxu.cloudfront.net/themes/MobileCleanBlack_8909f63e/bg-inv.jpg
51288
http://cost.com/
21784
http://www1.cost.com/?tm=1&subid4=1675514230.0160340000&kw=eCommerce+Shopping+Platform&KW1=Wholesale%20Ecommerce%20Online%20Store&KW2=Membership%20and%20Billing%20Management&KW3=Club%20Membership%20Software&searchbox=0&domainname=0&backfill=0
7700
https://js-agent.newrelic.com/307.215647de-1223.js
4377
https://js-agent.newrelic.com/779.215647de-1223.js
4245
https://js-agent.newrelic.com/112.215647de-1223.js
3529
https://js-agent.newrelic.com/960.215647de-1223.js
2962
https://js-agent.newrelic.com/785.215647de-1223.js
2832
Avoids an excessive DOM size — 24 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
24
Maximum DOM Depth
6
Maximum Child Elements
13
Avoid chaining critical requests
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Cost.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 27 requests • 220 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
27
225134
Script
13
135451
Image
5
54220
Document
3
32266
Other
6
3197
Stylesheet
0
0
Media
0
0
Font
0
0
Third-party
21
192453
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 0 elements found
The element which was identified as the Largest Contentful Paint.
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Avoid large layout shifts
Below is a list of all DOM elements that contribute to the CLS of the page.
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 4 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
http://www.google.com/adsense/domains/caf.js?abp=1
3744
1378
http://www.google.com/adsense/domains/caf.js?abp=1
2985
759
https://www.google.com/adsense/domains/caf.js?pac=0
5122
88
http://cost.com/
780
81
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Image elements have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of cost.com on mobile screens.
Avoids `unload` event listeners
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Audits

Network Requests
Below is a list of network requests that were made during page load.
URL Protocol Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://cost.com/
http/1.1
0
223.89300004579
21784
55449
200
text/html
Document
https://js-agent.newrelic.com/692.215647de-1223.js
h2
258.86699999683
273.47700000973
1816
2024
200
application/javascript
Script
https://js-agent.newrelic.com/779.215647de-1223.js
h2
261.15800003754
276.07800002443
4245
8307
200
application/javascript
Script
https://js-agent.newrelic.com/823.215647de-1223.js
h2
261.3550000242
276.36100002564
2094
3147
200
application/javascript
Script
https://js-agent.newrelic.com/785.215647de-1223.js
h2
261.49500004249
276.59000002313
2832
5141
200
application/javascript
Script
https://js-agent.newrelic.com/325.215647de-1223.js
h2
261.65600004606
277.20300003421
1288
1119
200
application/javascript
Script
https://js-agent.newrelic.com/112.215647de-1223.js
h2
262.02500000363
276.76700003212
3529
7285
200
application/javascript
Script
https://js-agent.newrelic.com/960.215647de-1223.js
h2
262.29800004512
276.91300003789
2962
4860
200
application/javascript
Script
https://js-agent.newrelic.com/307.215647de-1223.js
h2
262.97400001204
278.02500000689
4377
9700
200
application/javascript
Script
https://js-agent.newrelic.com/817.215647de-1223.js
h2
263.32800003001
277.53300004406
1773
2422
200
application/javascript
Script
http://cost.com/?gp=1&js=1&uuid=1675514230.0083325209&other_args=eyJ1cmkiOiAiLyIsICJhcmdzIjogIiIsICJyZWZlcmVyIjogIiIsICJhY2NlcHQiOiAidGV4dC9odG1sLGFwcGxpY2F0aW9uL3hodG1sK3htbCxhcHBsaWNhdGlvbi94bWw7cT0wLjksaW1hZ2UvYXZpZixpbWFnZS93ZWJwLGltYWdlL2FwbmcsKi8qO3E9MC44LGFwcGxpY2F0aW9uL3NpZ25lZC1leGNoYW5nZTt2PWIzO3E9MC45In0=
http/1.1
266.78700000048
373.73500003014
1116
0
302
text/html
https://bam.nr-data.net/1/0d385ba8a0?a=31561968&v=1223.PROD&to=NlVXNhBWW0IEAEENXQ8fcxcMVEFYCg0aA1sAXkESA1lRUEsOXAdADkNQEBReVlQWTUYIWwxvWQ0DU1BD&rst=285&ck=0&s=0&ref=http://cost.com/&be=243&fe=17&dc=15&perf=%7B%22timing%22:%7B%22of%22:1675514230222,%22n%22:0,%22f%22:0,%22dn%22:0,%22dne%22:0,%22c%22:0,%22ce%22:0,%22rq%22:0,%22rp%22:225,%22rpe%22:225,%22dl%22:229,%22di%22:258,%22ds%22:258,%22de%22:258,%22dc%22:258,%22l%22:259,%22le%22:266%7D,%22navigation%22:%7B%7D%7D&jsonp=NREUM.setToken
http/1.1
285.54000001168
454.63600003859
532
49
200
text/javascript
Script
http://www1.cost.com/?tm=1&subid4=1675514230.0160340000&kw=eCommerce+Shopping+Platform&KW1=Wholesale%20Ecommerce%20Online%20Store&KW2=Membership%20and%20Billing%20Management&KW3=Club%20Membership%20Software&searchbox=0&domainname=0&backfill=0
http/1.1
374.06000000192
694.35000000522
7700
17525
200
text/html
Document
https://bam.nr-data.net/events/1/0d385ba8a0?a=31561968&v=1223.PROD&to=NlVXNhBWW0IEAEENXQ8fcxcMVEFYCg0aA1sAXkESA1lRUEsOXAdADkNQEBReVlQWTUYIWwxvWQ0DU1BD&rst=700&ck=0&s=0&ref=http://cost.com/
699.6930000023
0
0
-1
Ping
https://bam.nr-data.net/jserrors/1/0d385ba8a0?a=31561968&v=1223.PROD&to=NlVXNhBWW0IEAEENXQ8fcxcMVEFYCg0aA1sAXkESA1lRUEsOXAdADkNQEBReVlQWTUYIWwxvWQ0DU1BD&rst=702&ck=0&s=0&ref=http://cost.com/
700.66800003406
0
0
-1
Ping
http://www.google.com/adsense/domains/caf.js?abp=1
http/1.1
707.93299999787
720.9440000006
54669
147991
200
text/javascript
Script
http://www1.cost.com/track.php?domain=cost.com&toggle=browserjs&uid=MTY3NTUxNDIzMC44MzE6Yzk4ZDQ0MDZmNTYyYmViOWQ1NGIwNTA1ZDNlY2E5YWJiZDI2MjBhZjY4NTA4ZTFhYTE1MmU2MGE0MmVmYzRjZTo2M2RlNTE3NmNhZTBi
http/1.1
740.8160000341
1097.1049999935
608
0
200
text/html
XHR
http://www1.cost.com/ls.php
http/1.1
1098.9570000092
1403.4270000411
863
0
201
text/javascript
XHR
https://partner.googleadservices.com/gampad/cookie.js?domain=www1.cost.com&client=dp-teaminternet12_3ph&product=SAS&callback=__sasCookie
h2
1103.4720000462
1115.9780000453
763
356
200
text/javascript
Script
http://d38psrni17bvxu.cloudfront.net/themes/MobileCleanBlack_8909f63e/bg-inv.jpg
http/1.1
1109.00700005
1143.2800000184
51288
50845
200
image/jpeg
Image
https://www.google.com/afs/ads?adtest=off&psid=3164365637&pcsa=false&channel=000002%2Cbucket009&client=dp-teaminternet12_3ph&r=m&hl=en&rpbu=http%3A%2F%2Fwww1.cost.com%2F%3Fts%3DfE1vYmlsZUNsZWFuQmxhY2t8fDQ3OWMwfGJ1Y2tldDAwOXx8fHx8fDYzZGU1MTc2Y2FkZTR8fHwxNjc1NTE0MjMwLjg0MDN8MzY3MTliZjk3YjdhMmIxYzU4ZjYzY2MxZjdjMzA1YTRmYjcyMDYxOHx8fHx8MXx8MHwwfHx8fDF8fHx8fDB8MHx8fHx8fHx8fHwwfDB8fDB8fHwwfDB8VzEwPXx8MHxleUp6ZFdKcFpEUWlPaUl4TmpjMU5URTBNak13TGpBeE5qQXpOREF3TURBaWZRPT18YjE0Yzk3NjFmODdhNTgwZmUzMGNkODE5N2M3YjhiYjEzN2E5OTVlMXwwfGRwLXRlYW1pbnRlcm5ldDEyXzNwaHwwfDA%253D&terms=Wholesale%20Ecommerce%20Online%20Store%2CMembership%20and%20Billing%20Management%2CClub%20Membership%20Software&max_radlink_len=40&type=3&uiopt=true&swp=as-drid-2483796446137945&oe=UTF-8&ie=UTF-8&fexp=21404%2C17300003%2C17301140%2C17301141%2C17301143&format=r3&nocache=9381675514231329&num=0&output=afd_ads&domain_name=www1.cost.com&v=3&bsl=8&pac=0&u_his=2&u_tz=-480&dt=1675514231331&u_w=360&u_h=640&biw=360&bih=640&psw=360&psh=918&frm=0&cl=503972142&uio=-&cont=tc&jsid=caf&jsv=503972142&rurl=http%3A%2F%2Fwww1.cost.com%2F%3Ftm%3D1%26subid4%3D1675514230.0160340000%26kw%3DeCommerce%2BShopping%2BPlatform%26KW1%3DWholesale%2520Ecommerce%2520Online%2520Store%26KW2%3DMembership%2520and%2520Billing%2520Management%26KW3%3DClub%2520Membership%2520Software%26searchbox%3D0%26domainname%3D0%26backfill%3D0&adbw=master-1%3A360
h2
1115.7180000446
1237.5760000432
2782
7488
200
text/html
Document
https://www.google.com/adsense/domains/caf.js?pac=0
h2
1245.6470000325
1259.7530000494
54571
147915
200
text/javascript
Script
https://afs.googleusercontent.com/ad_icons/standard/publisher_icon_image/search.svg?c=%23ffffff
h2
1289.4470000174
1293.0440000491
1070
391
200
image/svg+xml
Image
https://afs.googleusercontent.com/ad_icons/standard/publisher_icon_image/call_to_action_arrow.svg?c=%23ffffff
h2
1289.6760000149
1295.3910000506
1078
444
200
image/svg+xml
Image
http://www1.cost.com/track.php?domain=cost.com&caf=1&toggle=answercheck&answer=yes&uid=MTY3NTUxNDIzMC44MzE6Yzk4ZDQ0MDZmNTYyYmViOWQ1NGIwNTA1ZDNlY2E5YWJiZDI2MjBhZjY4NTA4ZTFhYTE1MmU2MGE0MmVmYzRjZTo2M2RlNTE3NmNhZTBi
http/1.1
1292.041000037
1634.990999999
610
0
200
text/html
XHR
https://www.google.com/afs/gen_204?client=dp-teaminternet12_3ph&output=uds_ads_only&zx=dz5j2lrih0st&aqid=d1HeY5nfGMXBowbWkY-YCg&psid=3164365637&pbt=bs&adbx=0&adby=48&adbh=556&adbw=360&adbah=199%2C171%2C171&adbn=master-1&eawp=partner-dp-teaminternet12_3ph&errv=503972142&csala=8%7C0%7C135%7C26%7C385&lle=0&llm=1000&ifv=1&usr=1
h2
3161.2400000449
3192.6979999989
573
0
204
text/html
Image
https://www.google.com/afs/gen_204?client=dp-teaminternet12_3ph&output=uds_ads_only&zx=ungh8mtqtp00&aqid=d1HeY5nfGMXBowbWkY-YCg&psid=3164365637&pbt=bv&adbx=0&adby=48&adbh=556&adbw=360&adbah=199%2C171%2C171&adbn=master-1&eawp=partner-dp-teaminternet12_3ph&errv=503972142&csala=8%7C0%7C135%7C26%7C385&lle=0&llm=1000&ifv=1&usr=1
h2
3661.9150000042
3692.5770000089
211
0
204
text/html
Image
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
-38.481
7.916
-30.326
20.13
-8.966
9.405
432.595
11.266
466.368
6.415
472.808
379.726
974.917
5.797
1003.488
21.917
1025.907
344.617
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Metrics

Time to Interactive — 5.1 s
The time taken for the page to become fully interactive.
Speed Index — 4.9 s
The time taken for the page contents to be visibly populated.

Other

Reduce unused JavaScript — Potential savings of 63 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
http://www.google.com/adsense/domains/caf.js?abp=1
54669
33093
https://www.google.com/adsense/domains/caf.js?pac=0
54571
31337
Serve images in next-gen formats — Potential savings of 24 KiB
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
URL Resource Size (Bytes) Potential Savings (Bytes)
http://d38psrni17bvxu.cloudfront.net/themes/MobileCleanBlack_8909f63e/bg-inv.jpg
50845
24799.85
Serve static assets with an efficient cache policy — 13 resources found
Cost.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
http://d38psrni17bvxu.cloudfront.net/themes/MobileCleanBlack_8909f63e/bg-inv.jpg
0
51288
https://bam.nr-data.net/1/0d385ba8a0?a=31561968&v=1223.PROD&to=NlVXNhBWW0IEAEENXQ8fcxcMVEFYCg0aA1sAXkESA1lRUEsOXAdADkNQEBReVlQWTUYIWwxvWQ0DU1BD&rst=285&ck=0&s=0&ref=http://cost.com/&be=243&fe=17&dc=15&perf=%7B%22timing%22:%7B%22of%22:1675514230222,%22n%22:0,%22f%22:0,%22dn%22:0,%22dne%22:0,%22c%22:0,%22ce%22:0,%22rq%22:0,%22rp%22:225,%22rpe%22:225,%22dl%22:229,%22di%22:258,%22ds%22:258,%22de%22:258,%22dc%22:258,%22l%22:259,%22le%22:266%7D,%22navigation%22:%7B%7D%7D&jsonp=NREUM.setToken
0
532
https://js-agent.newrelic.com/307.215647de-1223.js
7200000
4377
https://js-agent.newrelic.com/779.215647de-1223.js
7200000
4245
https://js-agent.newrelic.com/112.215647de-1223.js
7200000
3529
https://js-agent.newrelic.com/960.215647de-1223.js
7200000
2962
https://js-agent.newrelic.com/785.215647de-1223.js
7200000
2832
https://js-agent.newrelic.com/823.215647de-1223.js
7200000
2094
https://js-agent.newrelic.com/692.215647de-1223.js
7200000
1816
https://js-agent.newrelic.com/817.215647de-1223.js
7200000
1773
https://js-agent.newrelic.com/325.215647de-1223.js
7200000
1288
https://afs.googleusercontent.com/ad_icons/standard/publisher_icon_image/call_to_action_arrow.svg?c=%23ffffff
82800000
1078
https://afs.googleusercontent.com/ad_icons/standard/publisher_icon_image/search.svg?c=%23ffffff
82800000
1070
Reduce JavaScript execution time — 3.2 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
http://www1.cost.com/?tm=1&subid4=1675514230.0160340000&kw=eCommerce+Shopping+Platform&KW1=Wholesale%20Ecommerce%20Online%20Store&KW2=Membership%20and%20Billing%20Management&KW3=Club%20Membership%20Software&searchbox=0&domainname=0&backfill=0
1581.5
1514.128
14.716
http://www.google.com/adsense/domains/caf.js?abp=1
1440.08
1412.484
11.732
http://cost.com/
158.432
106.424
18.756
https://www.google.com/adsense/domains/caf.js?pac=0
120.16
89.748
8.272
Unattributable
105.74
5.184
0
Minimize main-thread work — 3.5 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
3184.072
Other
169.236
Script Parsing & Compilation
64.208
Style & Layout
37.664
Parse HTML & CSS
29.056
Rendering
18.344
Garbage Collection
11.452

Metrics

First Contentful Paint — 4.1 s
The time taken for the first image or text on the page to be rendered.
Total Blocking Time — 830 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).
Largest Contentful Paint
The timing of the largest text or image that is painted.

Audits

Max Potential First Input Delay — 1,380 ms
Users could experience a delay when interacting with the page.
First Meaningful Paint — 4.1 s
The time taken for the primary content of the page to be rendered.

Other

Eliminate render-blocking resources — Potential savings of 1,800 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Cost.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
http://www.google.com/adsense/domains/caf.js?abp=1
54669
930
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Avoid multiple page redirects — Potential savings of 960 ms
Redirects can cause additional delays before the page can begin loading. Cost.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://cost.com/
780
http://cost.com/?gp=1&js=1&uuid=1675514230.0083325209&other_args=eyJ1cmkiOiAiLyIsICJhcmdzIjogIiIsICJyZWZlcmVyIjogIiIsICJhY2NlcHQiOiAidGV4dC9odG1sLGFwcGxpY2F0aW9uL3hodG1sK3htbCxhcHBsaWNhdGlvbi94bWw7cT0wLjksaW1hZ2UvYXZpZixpbWFnZS93ZWJwLGltYWdlL2FwbmcsKi8qO3E9MC44LGFwcGxpY2F0aW9uL3NpZ25lZC1leGNoYW5nZTt2PWIzO3E9MC45In0=
180
http://www1.cost.com/?tm=1&subid4=1675514230.0160340000&kw=eCommerce+Shopping+Platform&KW1=Wholesale%20Ecommerce%20Online%20Store&KW2=Membership%20and%20Billing%20Management&KW3=Club%20Membership%20Software&searchbox=0&domainname=0&backfill=0
0
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.
Reduce the impact of third-party code — Third-party code blocked the main thread for 1,330 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
112806
1331.244
25448
0
763
0
First Contentful Paint (3G) — 7124 ms
The time taken for the first image or text on the page to be rendered while on a 3G network.
85

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of cost.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Cost.com may provide assistance to deaf or hearing-impaired users with captions on videos.

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements

Names and labels

`<frame>` or `<iframe>` elements do not have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Failing Elements

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
83

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that cost.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids front-end JavaScript libraries with known security vulnerabilities
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
No CSP found in enforcement mode
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 8 insecure requests found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://cost.com/
Allowed
http://cost.com/?gp=1&js=1&uuid=1675514230.0083325209&other_args=eyJ1cmkiOiAiLyIsICJhcmdzIjogIiIsICJyZWZlcmVyIjogIiIsICJhY2NlcHQiOiAidGV4dC9odG1sLGFwcGxpY2F0aW9uL3hodG1sK3htbCxhcHBsaWNhdGlvbi94bWw7cT0wLjksaW1hZ2UvYXZpZixpbWFnZS93ZWJwLGltYWdlL2FwbmcsKi8qO3E9MC44LGFwcGxpY2F0aW9uL3NpZ25lZC1leGNoYW5nZTt2PWIzO3E9MC45In0=
Allowed
http://www1.cost.com/?tm=1&subid4=1675514230.0160340000&kw=eCommerce+Shopping+Platform&KW1=Wholesale%20Ecommerce%20Online%20Store&KW2=Membership%20and%20Billing%20Management&KW3=Club%20Membership%20Software&searchbox=0&domainname=0&backfill=0
Allowed
http://www.google.com/adsense/domains/caf.js?abp=1
Allowed
http://www1.cost.com/track.php?domain=cost.com&toggle=browserjs&uid=MTY3NTUxNDIzMC44MzE6Yzk4ZDQ0MDZmNTYyYmViOWQ1NGIwNTA1ZDNlY2E5YWJiZDI2MjBhZjY4NTA4ZTFhYTE1MmU2MGE0MmVmYzRjZTo2M2RlNTE3NmNhZTBi
Allowed
http://www1.cost.com/ls.php
Allowed
http://d38psrni17bvxu.cloudfront.net/themes/MobileCleanBlack_8909f63e/bg-inv.jpg
Allowed
http://www1.cost.com/track.php?domain=cost.com&caf=1&toggle=answercheck&answer=yes&uid=MTY3NTUxNDIzMC44MzE6Yzk4ZDQ0MDZmNTYyYmViOWQ1NGIwNTA1ZDNlY2E5YWJiZDI2MjBhZjY4NTA4ZTFhYTE1MmU2MGE0MmVmYzRjZTo2M2RlNTE3NmNhZTBi
Allowed

Audits

Uses deprecated APIs — 1 warning found
Avoid deprecated APIs which will eventually be removed the browser.
Deprecation / Warning Source
Synchronous `XMLHttpRequest` on the main thread is deprecated because of its detrimental effects to the end user’s experience. For more help, check https://xhr.spec.whatwg.org/.
83

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for cost.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of cost.com on mobile screens.
Document uses legible font sizes — 94.9% legible text
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Source Selector % of Page Text Font Size
.si133
5.10%
10px
94.90%
≥ 12px
Tap targets are sized appropriately — 100% appropriately sized tap targets
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Document does not have a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.

Crawling and Indexing

Links are not crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
30

PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of cost.com. This includes details about web app manifests.

PWA Optimized

Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of cost.com on mobile screens.

Installable

Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
Failure reason
No manifest was fetched

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Does not provide a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Hosting

Server Location

Server IP Address: 45.33.30.197
Continent: North America
Country: United States
United States Flag
Region: Texas
City: Richardson
Longitude: -96.7028
Latitude: 32.9473
Currencies: USD
USN
USS
Languages: English

Web Hosting Provider

Name IP Address
Linode
Registration

Domain Registrant

Private Registration: No
Name: Michael Castello
Organization: Castello Brothers, LLC
Country: US
City: Playa del Rey
State: CA
Post Code: 90296
Email: michael@ccin.com
Phone: +1.8887694764
Note: Registration information is derived from various sources and may be inaccurate.

Domain Registrar

Name IP Address
Moniker Online Services LLC 104.22.56.65
Security

Visitor Safety

Mature Content: Not Likely
McAfee WebAdvisor Rating: Unknown
WOT Rating:
WOT Trustworthiness:
WOT Child Safety:
Note: Safety information is not guaranteed.

SSL/TLS Certificate

Issued To: cost.com
Issued By: R3
Valid From: 6th March, 2023
Valid To: 4th June, 2023
Subject: CN = cost.com
Hash: c3da95ff
Issuer: CN = R3
O = Let's Encrypt
S = US
Version: 2
Serial Number: 0x0356D376DBECCD9A7CE24D3343B2483C843F
Serial Number (Hex): 0356D376DBECCD9A7CE24D3343B2483C843F
Valid From: 6th March, 2024
Valid To: 4th June, 2024
Signature Algorithm (Short Name): RSA-SHA256
Signature Algorithm (Long Name): sha256WithRSAEncryption
Authority Key Identifier: keyid:14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication
Certificate Policies: Policy: 2.23.140.1.2.1
Policy: 1.3.6.1.4.1.44947.1.1.1
CPS: http://cps.letsencrypt.org

Authority Information Access: OCSP - URI:http://r3.o.lencr.org
CA Issuers - URI:http://r3.i.lencr.org/

SCT List: Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 7A:32:8C:54:D8:B7:2D:B6:20:EA:38:E0:52:1E:E9:84:
16:70:32:13:85:4D:3B:D2:2B:C1:3A:57:A3:52:EB:52
Timestamp : Mar 6 13:22:06.206 2023 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:21:00:D9:69:2C:8C:4C:FE:AF:D5:89:07:1D:
DF:E1:19:79:D7:2E:AB:DB:C6:A3:53:F2:26:4F:59:0B:
C4:2B:03:FF:A2:02:20:27:F9:5D:B1:39:FA:58:C9:37:
6D:B4:49:0C:4D:62:DA:93:07:BB:E5:E7:F3:A6:8F:09:
97:D7:99:54:EC:7E:9B
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : B7:3E:FB:24:DF:9C:4D:BA:75:F2:39:C5:BA:58:F4:6C:
5D:FC:42:CF:7A:9F:35:C4:9E:1D:09:81:25:ED:B4:99
Timestamp : Mar 6 13:22:06.201 2023 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:46:02:21:00:F1:8F:21:F3:30:A8:FE:94:54:B9:B3:
AC:C0:49:07:C6:B8:EF:2F:C7:85:59:A3:FE:3F:68:C7:
3A:A2:C8:60:F6:02:21:00:95:07:EF:E7:EE:F5:84:C3:
00:FE:EF:E8:D3:87:26:5D:C0:F2:00:27:20:B6:A1:26:
91:D1:B6:67:69:D5:13:AF
Key Usage: Digital Signature, Key Encipherment
Basic Constraints: CA:FALSE
Subject Alternative Name: DNS:cost.com
DNS:*.cost.com
Technical

DNS Lookup

SOA Records

Domain Name Primary NS Responsible Email TTL
cost.com. ns1.mytrafficmanagement.com. admin.giantpanda.com. 3600

HTTP Response Headers

HTTP-Code: HTTP/1.1 200 OK
server: openresty/1.13.6.1
date: 18th March, 2023
content-type: application/octet-stream
content-length: 0
connection: close

Whois Lookup

Created: 18th June, 1997
Changed: 5th October, 2022
Expires: 17th June, 2027
Registrar: Moniker Online Services LLC
Status: clientTransferProhibited
Nameservers: ns1.mytrafficmanagement.com
ns2.mytrafficmanagement.com
Owner Name: Michael Castello
Owner Organization: Castello Brothers, LLC
Owner Street: PO BOX 5537
Owner Post Code: 90296
Owner City: Playa del Rey
Owner State: CA
Owner Country: US
Owner Phone: +1.8887694764
Owner Email: michael@ccin.com
Admin Name: Michael Castello
Admin Organization: Castello Brothers, LLC
Admin Street: PO BOX 5537
Admin Post Code: 90296
Admin City: Playa del Rey
Admin State: CA
Admin Country: US
Admin Phone: +1.8887694764
Admin Email: michael@ccin.com
Tech Name: Michael Castello
Tech Organization: Castello Brothers, LLC
Tech Street: PO BOX 5537
Tech Post Code: 90296
Tech City: Playa del Rey
Tech State: CA
Tech Country: US
Tech Phone: +1.8887694764
Tech Email: michael@ccin.com
Billing Name: Michael Castello
Billing Organization: Castello Brothers, LLC
Billing Street: PO BOX 5537
Billing Post Code: 90296
Billing City: Playa del Rey
Billing State: CA
Billing Country: US
Billing Phone: +1.8887694764
Billing Email: michael@ccin.com
Full Whois: Domain Name: cost.com
Registry Domain ID: 2933175_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.moniker.com
Registrar URL: http://www.moniker.com
Updated Date: 2022-10-05T22:10:15Z
Creation Date: 1997-06-18T04:00:00Z
Registrar Registration Expiration Date: 2027-06-17T04:00:00Z
Registrar: Moniker Online Services LLC
Registrar IANA ID: 228
Registrar Abuse Contact Email: abusereport@moniker.com
Registrar Abuse Contact Phone: +1.9546071294
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: Michael Castello
Registrant Organization: Castello Brothers, LLC
Registrant Street: PO BOX 5537
Registrant City: Playa del Rey
Registrant State/Province: CA
Registrant Postal Code: 90296
Registrant Country: US
Registrant Phone: +1.8887694764
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: michael@ccin.com
Registry Admin ID: REDACTED FOR PRIVACY
Admin Name: Michael Castello
Admin Organization: Castello Brothers, LLC
Admin Street: PO BOX 5537
Admin City: Playa del Rey
Admin State/Province: CA
Admin Postal Code: 90296
Admin Country: US
Admin Phone: +1.8887694764
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: michael@ccin.com
Registry Tech ID: REDACTED FOR PRIVACY
Tech Name: Michael Castello
Tech Organization: Castello Brothers, LLC
Tech Street: PO BOX 5537
Tech City: Playa del Rey
Tech State/Province: CA
Tech Postal Code: 90296
Tech Country: US
Tech Phone: +1.8887694764
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email: michael@ccin.com
Registry Billing ID: REDACTED FOR PRIVACY
Billing Name: Michael Castello
Billing Organization: Castello Brothers, LLC
Billing Street: PO BOX 5537
Billing City: Playa del Rey
Billing State/Province: CA
Billing Postal Code: 90296
Billing Country: US
Billing Phone: +1.8887694764
Billing Phone Ext:
Billing Fax:
Billing Fax Ext:
Billing Email: michael@ccin.com
Name Server: ns1.mytrafficmanagement.com
Name Server: ns2.mytrafficmanagement.com
DNSSEC: unsigned
URL of the ICANN WHOIS Data Problem Reporting System: https://wdprs.internic.net/
>>> Last update of WHOIS database: 2023-03-18T02:33:11Z <<<

For more information on Whois status codes, please visit https://www.icann.org/epp

To contact the registered registrant please proceed to:
https://www.domain-contact.org

Please register your domains at; http://www.moniker.com
This data is provided by MONIKER ONLINE SERVICES LLC.
for information purposes, and to assist persons obtaining information
about or related to domain name registration records.
MONIKER ONLINE SERVICES LLC. does not guarantee its accuracy.
By submitting a WHOIS query, you agree that you will use this data
only for lawful purposes and that, under no circumstances, you will
use this data to
1) allow, enable, or otherwise support the transmission of mass
unsolicited, commercial advertising or solicitations via E-mail
(spam) or
2) enable high volume, automated, electronic processes that apply
to this WHOIS server.
These terms may be changed without prior notice.
By submitting this query, you agree to abide by this policy.

Nameservers

Name IP Address
ns1.mytrafficmanagement.com 52.223.41.32
ns2.mytrafficmanagement.com 35.71.129.26
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