Report Summary

  • 46

    Performance

    Renders faster than
    65% of other websites

  • 62

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 92

    SEO

    Google-friendlier than
    75% 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

27.1 sec in total

First Response

4.1 sec

Resources Loaded

22.8 sec

Page Rendered

258 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 4.1 sec and then it took 23 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

398.cn performance score

46

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.0 s

1/100

10%

LCP (Largest Contentful Paint)

Value12.2 s

0/100

25%

SI (Speed Index)

Value15.3 s

1/100

10%

TBT (Total Blocking Time)

Value140 ms

95/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value11.3 s

19/100

10%

Network Requests Diagram

398.cn

4111 ms

base.css

400 ms

style.css

818 ms

ylmf.cai.js

4208 ms

config.js

1203 ms

Our browser made a total of 48 requests to load all elements on the main page. We found that 44% of them (21 requests) were addressed to the original 398.cn, 6% (3 requests) were made to Hm.baidu.com and 6% (3 requests) were made to A.alimama.cn. The less responsive or slowest element that took the longest time to load (7.3 sec) relates to the external source Api.115.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 221.5 kB (64%)

Content Size

345.7 kB

After Optimization

124.2 kB

In fact, the total size of 398.cn main page is 345.7 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. 30% of websites need less resources to load. Javascripts take 230.4 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 66.8 kB

  • Original 82.5 kB
  • After minification 58.9 kB
  • After compression 15.7 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. This page needs HTML code to be minified as it can gain 23.6 kB, which is 29% 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 66.8 kB or 81% of the original size.

Image Optimization

-13%

Potential reduce by 1.3 kB

  • Original 9.8 kB
  • After minification 8.5 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, 398 needs image optimization as it can save up to 1.3 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

-59%

Potential reduce by 135.9 kB

  • Original 230.4 kB
  • After minification 220.9 kB
  • After compression 94.6 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 135.9 kB or 59% of the original size.

CSS Optimization

-76%

Potential reduce by 17.5 kB

  • Original 23.0 kB
  • After minification 19.5 kB
  • After compression 5.5 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 needs all CSS files to be minified and compressed as it can save up to 17.5 kB or 76% of the original size.

Requests Breakdown

Number of requests can be reduced by 26 (63%)

Requests Now

41

After Optimization

15

The browser has sent 41 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 19 to 1 for JavaScripts and as a result speed up the page load time.

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

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

92

Search Engine Optimization Advices

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

    N/A

  • Encoding

    GB2312

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 neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that 398.cn main page’s claimed encoding is gb2312. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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: