Tools & Wizards About Us
398.cn screenshot

Report Summary

  • 48

    Performance

    Renders faster than
    66% of other websites

  • 62

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

398.cn

398口腔网-提供牙齿矫正、种植牙、正畸、牙齿美白、烤瓷牙、牙周治疗项目咨询的口腔门户网站。

Page Load Speed

11.8 sec in total

First Response

1.3 sec

Resources Loaded

10.3 sec

Page Rendered

221 ms

398.cn screenshot

About Website

Visit 398.cn now to see the best up-to-date 398 content and also check out these interesting facts you probably never knew about 398.cn

398口腔网分享全国口腔医院、牙科医生、口腔案例、牙科资讯和优惠信息，提供牙齿矫正、种植牙、牙齿美白、牙周治疗项目在线咨询服务。

Visit 398.cn

Key Findings

We analyzed 398.cn page load time and found that the first response time was 1.3 sec and then it took 10.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

398.cn performance score

48

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.0 s

1/100

10%

LCP (Largest Contentful Paint)

Value7.5 s

4/100

25%

SI (Speed Index)

Value13.7 s

1/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value11.3 s

19/100

10%

Network Requests Diagram

www.398.cn

1340 ms

207 ms

caoch_list.css

410 ms

new_list.css

609 ms

jquery1.8.min.js

810 ms

Our browser made a total of 93 requests to load all elements on the main page. We found that 95% of them (88 requests) were addressed to the original 398.cn, 2% (2 requests) were made to Hm.baidu.com and 1% (1 request) were made to Duihua.398.cn. The less responsive or slowest element that took the longest time to load (4.4 sec) belongs to the original domain 398.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 173.8 kB (5%)

Content Size

3.6 MB

After Optimization

3.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 398.cn main page is 3.6 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. 65% of websites need less resources to load. Images take 3.4 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 116.6 kB

  • Original 131.7 kB
  • After minification 84.6 kB
  • After compression 15.1 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. This page needs HTML code to be minified as it can gain 47.1 kB, which is 36% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 116.6 kB or 89% of the original size.

Image Optimization

-2%

Potential reduce by 56.3 kB

  • Original 3.4 MB
  • After minification 3.3 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. 398 images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 91 B

  • Original 36.8 kB
  • After minification 36.8 kB
  • After compression 36.7 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

-8%

Potential reduce by 737 B

  • Original 9.4 kB
  • After minification 9.4 kB
  • After compression 8.7 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. 398.cn has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 8 (9%)

Requests Now

89

After Optimization

81

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 89 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 398. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.398.cn

www.398.cn

1340 ms

207 ms

caoch_list.css

caoch_list.css

410 ms

new_list.css

new_list.css

609 ms

jquery1.8.min.js

jquery1.8.min.js

810 ms

iconfont.css

iconfont.css

612 ms

index.js

index.js

610 ms

wydh.js

wydh.js

1330 ms

common.js

common.js

656 ms

hm.js

hm.js

3827 ms

push.js

push.js

677 ms

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m_weixin.png

207 ms

s_weixin.png

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667 ms

logo1.png

logo1.png

205 ms

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204 ms

beijing.png

beijing.png

207 ms

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weixin.jpg

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2705 ms

hm.gif

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1827 ms

iconfont.ttf

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402 ms

Accessibility Review

398.cn accessibility score

62

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

398.cn best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

398.cn SEO score

85

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

    ZH

  • Language Claimed

    ZH

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 398.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it matches the claimed language. Our system also found out that 398.cn 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

398.cn

Open Graph description is not detected on the main page of 398. 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: