Tools & Wizards About Us
youdao.com screenshot

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 68

    SEO

    Google-friendlier than
    28% of websites

youdao.com

网易有道

Page Load Speed

5.8 sec in total

First Response

688 ms

Resources Loaded

4.9 sec

Page Rendered

238 ms

youdao.com screenshot

About Website

Click here to check amazing Youdao content for China. Otherwise, check out these important facts you probably never knew about youdao.com

网易有道是中国领先的智能学习公司，致力于提供100%以用户为导向的学习产品和服务。有道成立于2006年，打造了一系列深受用户喜欢的口碑型大众学习工具产品，例如：网易有道词典、有道精品课、有道翻译官、有道云笔记等。2014年，网易有道宣布正式进军互联网教育行业。2018年4月，网易有道完成首次战略融资，投后估值11.2亿美金，跻身独角兽阵营。2019年10月，网易有道成功登陆纽交所，股票代码为“DA...

Visit youdao.com

Key Findings

We analyzed Youdao.com page load time and found that the first response time was 688 ms and then it took 5.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

youdao.com performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.2 s

0/100

10%

LCP (Largest Contentful Paint)

Value8.9 s

1/100

25%

SI (Speed Index)

Value10.5 s

7/100

10%

TBT (Total Blocking Time)

Value130 ms

96/100

30%

CLS (Cumulative Layout Shift)

Value0.238

52/100

15%

TTI (Time to Interactive)

Value9.1 s

33/100

10%

Network Requests Diagram

youdao.com

688 ms

youdao.com

1327 ms

swiper-bundle.min.css

1100 ms

bury.js

1122 ms

v1.js

1142 ms

Our browser made a total of 26 requests to load all elements on the main page. We found that 8% of them (2 requests) were addressed to the original Youdao.com, 65% (17 requests) were made to Shared.ydstatic.com and 15% (4 requests) were made to Luna-dict-community.nosdn.127.net. The less responsive or slowest element that took the longest time to load (2 sec) relates to the external source Ydlunacommon-cdn.nosdn.127.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 282.5 kB (25%)

Content Size

1.1 MB

After Optimization

836.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Youdao.com main page is 1.1 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. 15% of websites need less resources to load. Javascripts take 611.4 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 247.6 kB

  • Original 296.5 kB
  • After minification 296.4 kB
  • After compression 48.9 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 247.6 kB or 84% of the original size.

Image Optimization

-13%

Potential reduce by 27.1 kB

  • Original 206.2 kB
  • After minification 179.1 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, Youdao needs image optimization as it can save up to 27.1 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 7.6 kB

  • Original 611.4 kB
  • After minification 611.4 kB
  • After compression 603.9 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. This website has mostly compressed JavaScripts.

CSS Optimization

-5%

Potential reduce by 244 B

  • Original 4.7 kB
  • After minification 4.7 kB
  • After compression 4.4 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. Youdao.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 11 (50%)

Requests Now

22

After Optimization

11

  • Images
  • JavaScript
  • CSS

The browser has sent 22 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Youdao. 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 as a result speed up the page load time.

Network Requests Diagram

youdao.com

youdao.com

688 ms

youdao.com

youdao.com

1327 ms

swiper-bundle.min.css

swiper-bundle.min.css

1100 ms

bury.js

bury.js

1122 ms

v1.js

v1.js

1142 ms

yd-nav.js

yd-nav.js

1150 ms

swiper-bundle.min.js

swiper-bundle.min.js

1165 ms

1.1.3.js

1.1.3.js

1166 ms

eaf9309.js

eaf9309.js

947 ms

1a90eb5.js

1a90eb5.js

992 ms

68c1d72.js

68c1d72.js

1012 ms

ee95b50.js

ee95b50.js

1006 ms

4398c4c.js

4398c4c.js

1199 ms

9225aa6.js

9225aa6.js

1569 ms

5990f6e.js

5990f6e.js

1123 ms

cb776e6995f1c703706cf8c4c39a7520.png

cb776e6995f1c703706cf8c4c39a7520.png

1598 ms

db2266e756ded7094c5dcbeebd1e6a8b.png

db2266e756ded7094c5dcbeebd1e6a8b.png

1336 ms

ae3b4b07a09823bf38d7bb815c6ea139.png

ae3b4b07a09823bf38d7bb815c6ea139.png

1534 ms

64e63d8a45a00599d8f4eb67b70f6883.png

64e63d8a45a00599d8f4eb67b70f6883.png

1740 ms

84cbd355815f9b4958723ebffaddac96.png

84cbd355815f9b4958723ebffaddac96.png

1937 ms

d4420720818e84a2cefb493dc0315992.png

d4420720818e84a2cefb493dc0315992.png

1766 ms

banner.19d6197.png

banner.19d6197.png

632 ms

search_icon.8b36c2f.png

search_icon.8b36c2f.png

275 ms

word_book_btn.f206077.png

word_book_btn.f206077.png

279 ms

81b481a6bee6d6a94eaf53895db33dc1.otf

81b481a6bee6d6a94eaf53895db33dc1.otf

1951 ms

Gilroy-Medium.woff

Gilroy-Medium.woff

377 ms

Accessibility Review

youdao.com accessibility score

81

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 input fields do not have accessible names

High

[role]s do not have all required [aria-*] attributes

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.

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

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

Image elements do not have [alt] attributes

Best Practices

youdao.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

Missing source maps for large first-party JavaScript

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

youdao.com SEO score

68

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Youdao.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Youdao.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

youdao.com

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