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bilibili.us screenshot

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

bilibili.us

Page Load Speed

1.1 sec in total

First Response

307 ms

Resources Loaded

606 ms

Page Rendered

194 ms

bilibili.us screenshot

About Website

Welcome to bilibili.us homepage info - get ready to check Bilibili best content for China right away, or after learning these important things about bilibili.us

bilibili.us is your first and best source for all of the information you’re looking for. From general topics to more of what you would expect to find here, bilibili.us has it all. We hope you find wha...

Visit bilibili.us

Key Findings

We analyzed Bilibili.us page load time and found that the first response time was 307 ms and then it took 800 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

bilibili.us performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.9 s

100/100

10%

LCP (Largest Contentful Paint)

Value1.4 s

100/100

25%

SI (Speed Index)

Value1.2 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value0.9 s

100/100

10%

Network Requests Diagram

bilibili.us

307 ms

jquery-1.11.3.custom.min.js

19 ms

caf.js

41 ms

caf.gif

68 ms

ads

78 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that 11% of them (1 request) were addressed to the original Bilibili.us, 33% (3 requests) were made to Google.com and 22% (2 requests) were made to Survey.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (307 ms) belongs to the original domain Bilibili.us.

Page Optimization Overview & Recommendations

Page size can be reduced by 314.5 kB (60%)

Content Size

527.2 kB

After Optimization

212.7 kB

  • HTML
  • JavaScript

In fact, the total size of Bilibili.us main page is 527.2 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. 25% of websites need less resources to load. Javascripts take 439.5 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 65.3 kB

  • Original 87.7 kB
  • After minification 87.7 kB
  • After compression 22.4 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 65.3 kB or 74% of the original size.

JavaScript Optimization

-57%

Potential reduce by 249.2 kB

  • Original 439.5 kB
  • After minification 439.5 kB
  • After compression 190.3 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 249.2 kB or 57% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (50%)

Requests Now

8

After Optimization

4

  • AJAX
  • Images
  • JavaScript

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bilibili. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

bilibili.us

bilibili.us

307 ms

jquery-1.11.3.custom.min.js

jquery-1.11.3.custom.min.js

19 ms

caf.js

caf.js

41 ms

caf.gif

caf.gif

68 ms

ads

ads

78 ms

async_survey

async_survey

61 ms

iframe.html

iframe.html

15 ms

prompt_embed_static.js

prompt_embed_static.js

18 ms

integrator.js

integrator.js

95 ms

Accessibility Review

bilibili.us accessibility score

70

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

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

Form elements do not have associated labels

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

bilibili.us best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

bilibili.us SEO score

82

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Page is blocked from indexing

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Bilibili.us can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that Bilibili.us 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

bilibili.us

Open Graph description is not detected on the main page of Bilibili. 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: