Report Summary

  • 45

    Performance

    Renders faster than
    64% of other websites

  • 43

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

pubmed.cn

丁香园生物医药科技网

Page Load Speed

12.8 sec in total

First Response

1.9 sec

Resources Loaded

10.8 sec

Page Rendered

162 ms

pubmed.cn screenshot

About Website

Click here to check amazing Pubmed content for China. Otherwise, check out these important facts you probably never knew about pubmed.cn

丁香园是面向医生、医疗机构、医药从业者以及生命科学领域人士的专业性社会化网络,提供医学、医疗、药学、生命科学等相关领域的交流平台、专业知识、最新科研进展以及技术服务。

Visit pubmed.cn

Key Findings

We analyzed Pubmed.cn page load time and found that the first response time was 1.9 sec and then it took 11 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

pubmed.cn performance score

45

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.2 s

8/100

10%

LCP (Largest Contentful Paint)

Value11.4 s

0/100

25%

SI (Speed Index)

Value7.0 s

33/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.305

39/100

15%

TTI (Time to Interactive)

Value6.7 s

56/100

10%

Network Requests Diagram

pubmed.cn

1868 ms

pubmed.css

5991 ms

index20111012.css

5992 ms

pubmed.js

6603 ms

login.js

6001 ms

Our browser made a total of 16 requests to load all elements on the main page. We found that 6% of them (1 request) were addressed to the original Pubmed.cn, 50% (8 requests) were made to Assets.dxycdn.com and 13% (2 requests) were made to Da.dxy.cn. The less responsive or slowest element that took the longest time to load (6.6 sec) relates to the external source Assets.dxycdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 131.8 kB (59%)

Content Size

222.0 kB

After Optimization

90.2 kB

In fact, the total size of Pubmed.cn main page is 222.0 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. 15% of websites need less resources to load. Javascripts take 169.0 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 8.1 kB

  • Original 11.7 kB
  • After minification 10.3 kB
  • After compression 3.6 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 1.4 kB, which is 12% 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 8.1 kB or 69% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 11.7 kB
  • After minification 11.7 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. Pubmed images are well optimized though.

JavaScript Optimization

-60%

Potential reduce by 101.1 kB

  • Original 169.0 kB
  • After minification 167.7 kB
  • After compression 67.9 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 101.1 kB or 60% of the original size.

CSS Optimization

-76%

Potential reduce by 22.6 kB

  • Original 29.5 kB
  • After minification 26.7 kB
  • After compression 7.0 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. Pubmed.cn needs all CSS files to be minified and compressed as it can save up to 22.6 kB or 76% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (47%)

Requests Now

15

After Optimization

8

The browser has sent 15 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Pubmed. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

pubmed.cn accessibility score

43

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.

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

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

pubmed.cn 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

pubmed.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

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 Pubmed.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 Pubmed.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

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