Tools & Wizards About Us
costco.bstock.com screenshot

Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 81

    SEO

    Google-friendlier than
    42% of websites

costco.bstock.com

Costco Auction Liquidation Marketplace | Costco Liquidation Auctions

Page Load Speed

2.4 sec in total

First Response

158 ms

Resources Loaded

2.2 sec

Page Rendered

74 ms

costco.bstock.com screenshot

About Website

Visit costco.bstock.com now to see the best up-to-date Costco Bstock content for United States and also check out these interesting facts you probably never knew about costco.bstock.com

The official B2B auction marketplace for Costco Wholesale Liquidation, selling grade A & B, member returns, unsold inventory, and grade C & D inventory to qualified business buyers. Register to bid on...

Visit costco.bstock.com

Key Findings

We analyzed Costco.bstock.com page load time and found that the first response time was 158 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

costco.bstock.com performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value16.8 s

0/100

25%

SI (Speed Index)

Value9.8 s

10/100

10%

TBT (Total Blocking Time)

Value900 ms

31/100

30%

CLS (Cumulative Layout Shift)

Value0.214

58/100

15%

TTI (Time to Interactive)

Value18.5 s

3/100

10%

Network Requests Diagram

costco.bstock.com

158 ms

costco.bstock.com

250 ms

391 ms

polyfiller.min.js

192 ms

base.css

268 ms

Our browser made a total of 46 requests to load all elements on the main page. We found that 4% of them (2 requests) were addressed to the original Costco.bstock.com, 37% (17 requests) were made to Bstock.com and 20% (9 requests) were made to Home-c63.nice-incontact.com. The less responsive or slowest element that took the longest time to load (478 ms) relates to the external source Bstock.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 311.4 kB (34%)

Content Size

904.4 kB

After Optimization

593.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Costco.bstock.com main page is 904.4 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 50% of websites need less resources to load. Javascripts take 562.2 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 23.0 kB

  • Original 32.7 kB
  • After minification 30.5 kB
  • After compression 9.7 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 23.0 kB or 70% of the original size.

Image Optimization

-58%

Potential reduce by 153.8 kB

  • Original 264.5 kB
  • After minification 110.6 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Costco Bstock needs image optimization as it can save up to 153.8 kB or 58% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-23%

Potential reduce by 130.8 kB

  • Original 562.2 kB
  • After minification 562.2 kB
  • After compression 431.5 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 130.8 kB or 23% of the original size.

CSS Optimization

-8%

Potential reduce by 3.8 kB

  • Original 45.1 kB
  • After minification 45.1 kB
  • After compression 41.3 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Costco.bstock.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 26 (68%)

Requests Now

38

After Optimization

12

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Costco Bstock. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

costco.bstock.com

costco.bstock.com

158 ms

costco.bstock.com

costco.bstock.com

250 ms

391 ms

polyfiller.min.js

polyfiller.min.js

192 ms

base.css

base.css

268 ms

custom.css

custom.css

199 ms

faq-page.css

faq-page.css

219 ms

1a5018b8500ad62506c962d298974fc0.js

1a5018b8500ad62506c962d298974fc0.js

396 ms

font-awesome.min.css

font-awesome.min.css

33 ms

embed.min.js

embed.min.js

255 ms

email-decode.min.js

email-decode.min.js

22 ms

snippet.js

snippet.js

54 ms

element.js

element.js

54 ms

logo_2x.png

logo_2x.png

41 ms

logo.png

logo.png

40 ms

landing.jpg

landing.jpg

478 ms

bstock.png

bstock.png

40 ms

analytics.min.js

analytics.min.js

315 ms

fbevents.js

fbevents.js

35 ms

authorize

authorize

172 ms

shim.css

shim.css

201 ms

3.js

3.js

192 ms

form-shim-extend.js

form-shim-extend.js

204 ms

canvas-blob.js

canvas-blob.js

221 ms

fancybox_overlay.png

fancybox_overlay.png

35 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

33 ms

ChatClient.aspx

ChatClient.aspx

82 ms

chatButton.html

chatButton.html

146 ms

bstockbeacon.php

bstockbeacon.php

275 ms

pendo.js

pendo.js

71 ms

main.js

main.js

33 ms

munchkin.js

munchkin.js

28 ms

gtm.js

gtm.js

87 ms

asset_composer.js

asset_composer.js

14 ms

munchkin.js

munchkin.js

89 ms

chatClient-v2.js

chatClient-v2.js

126 ms

screen.css

screen.css

64 ms

visitWebPage

visitWebPage

82 ms

index.html

index.html

66 ms

raygun.min.js

raygun.min.js

22 ms

fetch.min.js

fetch.min.js

63 ms

classListPolyfill.min.js

classListPolyfill.min.js

64 ms

bundle.min.js

bundle.min.js

368 ms

markdown-it.min.js

markdown-it.min.js

44 ms

bstockbeacon.php

bstockbeacon.php

191 ms

markdown-it.min.js

markdown-it.min.js

25 ms

Accessibility Review

costco.bstock.com accessibility score

82

Accessibility Issues

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

Best Practices

costco.bstock.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

costco.bstock.com SEO score

81

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Costco.bstock.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Costco.bstock.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

costco.bstock.com

Open Graph description is not detected on the main page of Costco Bstock. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: