Report Summary

  • 20

    Performance

    Renders faster than
    38% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

Page Load Speed

2.3 sec in total

First Response

635 ms

Resources Loaded

1.3 sec

Page Rendered

316 ms

youtube.co screenshot

About Website

Welcome to youtube.co homepage info - get ready to check You Tube best content for Canada right away, or after learning these important things about youtube.co

Visit youtube.co

Key Findings

We analyzed Youtube.co page load time and found that the first response time was 635 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

youtube.co performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.9 s

4/100

10%

LCP (Largest Contentful Paint)

Value9.5 s

0/100

25%

SI (Speed Index)

Value6.7 s

37/100

10%

TBT (Total Blocking Time)

Value5,510 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.033

100/100

15%

TTI (Time to Interactive)

Value15.8 s

6/100

10%

Network Requests Diagram

www.youtube.com

635 ms

scheduler.js

83 ms

www-core-vfl0Etv3h.css

140 ms

www-home-c4-vflPEpOMK.css

121 ms

www-pageframe-vflruz0dJ.css

154 ms

Our browser made a total of 71 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Youtube.co, 15% (11 requests) were made to S0.2mdn.net and 13% (9 requests) were made to S.ytimg.com. The less responsive or slowest element that took the longest time to load (635 ms) relates to the external source Youtube.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 894.8 kB (42%)

Content Size

2.1 MB

After Optimization

1.3 MB

In fact, the total size of Youtube.co main page is 2.1 MB. 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. Images take 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 310.2 kB

  • Original 348.7 kB
  • After minification 335.7 kB
  • After compression 38.5 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 310.2 kB or 89% of the original size.

Image Optimization

-1%

Potential reduce by 8.7 kB

  • Original 1.0 MB
  • After minification 1.0 MB

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. You Tube images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 208.0 kB

  • Original 334.1 kB
  • After minification 330.1 kB
  • After compression 126.1 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 208.0 kB or 62% of the original size.

CSS Optimization

-84%

Potential reduce by 367.9 kB

  • Original 437.9 kB
  • After minification 436.3 kB
  • After compression 69.9 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. Youtube.co needs all CSS files to be minified and compressed as it can save up to 367.9 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (22%)

Requests Now

68

After Optimization

53

The browser has sent 68 CSS, Javascripts, AJAX and image requests in order to completely render the main page of You Tube. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

youtube.co accessibility score

82

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

youtube.co best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

youtube.co SEO score

91

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

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 Youtube.co 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 Youtube.co 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

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