Tools & Wizards About Us

Report Summary

  • 67

    Performance

    Renders faster than
    79% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 38

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

cfh.ac.cn

中国自然标本馆

Page Load Speed

6 sec in total

First Response

2.1 sec

Resources Loaded

3.7 sec

Page Rendered

229 ms

About Website

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

中国自然标本馆（Chinese Field Herbarium，简称CFH）是中国科学院植物研究所建设的生物多样性信息网络平台，致力于为用户生物多样性数据的采集、管理、利用提供全套解决方案，并将广泛的志愿者力量综合起来，推动大范围的生物多样性本底调查工作。CFH的原则是公平、公开、志愿、合作、互动，用户的数据提交与平台的服务提供不以任何经济利益为目的，但欢迎相关的研究合作与经费支持。

Visit cfh.ac.cn

Key Findings

We analyzed Cfh.ac.cn page load time and found that the first response time was 2.1 sec and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

cfh.ac.cn performance score

67

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

52/100

10%

LCP (Largest Contentful Paint)

Value4.2 s

44/100

25%

SI (Speed Index)

Value8.7 s

17/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.173

70/100

15%

TTI (Time to Interactive)

Value4.0 s

88/100

10%

Network Requests Diagram

cfh.ac.cn

2085 ms

sites.css

83 ms

fancybox.css

54 ms

main_style.css

984 ms

css

23 ms

Our browser made a total of 23 requests to load all elements on the main page. We found that 65% of them (15 requests) were addressed to the original Cfh.ac.cn, 9% (2 requests) were made to Cdn2.editmysite.com and 4% (1 request) were made to Cdn1.editmysite.com. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Cfh.ac.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 33.2 kB (10%)

Content Size

344.0 kB

After Optimization

310.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cfh.ac.cn main page is 344.0 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. 30% of websites need less resources to load. Javascripts take 192.9 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 16.2 kB

  • Original 20.5 kB
  • After minification 19.9 kB
  • After compression 4.4 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 16.2 kB or 79% of the original size.

Image Optimization

-7%

Potential reduce by 6.1 kB

  • Original 86.2 kB
  • After minification 80.1 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. Cfh images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 108 B

  • Original 192.9 kB
  • After minification 192.9 kB
  • After compression 192.8 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

-24%

Potential reduce by 10.8 kB

  • Original 44.3 kB
  • After minification 42.7 kB
  • After compression 33.5 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. Cfh.ac.cn needs all CSS files to be minified and compressed as it can save up to 10.8 kB or 24% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (62%)

Requests Now

21

After Optimization

8

  • Images
  • JavaScript
  • CSS

The browser has sent 21 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cfh. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

cfh.ac.cn accessibility score

63

Accessibility Issues

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

<input type="image"> elements do not have [alt] text

High

Links do not have a discernible name

Best Practices

cfh.ac.cn best practices score

38

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

High

Registers an unload listener

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

cfh.ac.cn SEO score

67

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

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 Cfh.ac.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 Cfh.ac.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 Cfh. 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: