Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 60

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

21food.cn

食品商务网-网上食品贸易市场,食品行业门户网站

Page Load Speed

30.3 sec in total

First Response

979 ms

Resources Loaded

28.7 sec

Page Rendered

559 ms

21food.cn screenshot

About Website

Visit 21food.cn now to see the best up-to-date 21 Food content for China and also check out these interesting facts you probably never knew about 21food.cn

食品商务网是食品行业企业间(B2B)网上电子商务平台。网站汇聚海量食品相关产品批发、行业资讯、行业标准法规则等信息。网站定位食品全产业链,为包括农产品、食品原料、食品工业、食品添加剂、食品机械等在内的企业提供服务,助力食品工业发展。

Visit 21food.cn

Key Findings

We analyzed 21food.cn page load time and found that the first response time was 979 ms and then it took 29.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 8 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

21food.cn performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

12/100

10%

LCP (Largest Contentful Paint)

Value10.4 s

0/100

25%

SI (Speed Index)

Value9.2 s

13/100

10%

TBT (Total Blocking Time)

Value540 ms

55/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value19.8 s

2/100

10%

Network Requests Diagram

21food.cn

979 ms

www.21food.cn

1568 ms

index.css

218 ms

validationEngine.jquery.css

431 ms

jquery-1.11.1.min.js

838 ms

Our browser made a total of 225 requests to load all elements on the main page. We found that 22% of them (49 requests) were addressed to the original 21food.cn, 25% (56 requests) were made to Img9.21food.cn and 24% (53 requests) were made to Qnsppl.com. The less responsive or slowest element that took the longest time to load (20.5 sec) relates to the external source Qnsppl.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 268.5 kB (10%)

Content Size

2.7 MB

After Optimization

2.5 MB

In fact, the total size of 21food.cn main page is 2.7 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 2.4 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 213.2 kB

  • Original 249.7 kB
  • After minification 248.7 kB
  • After compression 36.5 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 213.2 kB or 85% of the original size.

Image Optimization

-2%

Potential reduce by 39.1 kB

  • Original 2.4 MB
  • After minification 2.3 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. 21 Food images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 14.7 kB

  • Original 106.6 kB
  • After minification 106.6 kB
  • After compression 91.9 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 14.7 kB or 14% of the original size.

CSS Optimization

-12%

Potential reduce by 1.4 kB

  • Original 12.1 kB
  • After minification 12.1 kB
  • After compression 10.7 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. 21food.cn needs all CSS files to be minified and compressed as it can save up to 1.4 kB or 12% of the original size.

Requests Breakdown

Number of requests can be reduced by 36 (20%)

Requests Now

181

After Optimization

145

The browser has sent 181 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 21 Food. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

21food.cn accessibility score

60

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.

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

High

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

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

Best Practices

21food.cn best practices score

58

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

Browser errors were logged to the console

SEO Factors

21food.cn SEO score

62

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

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    GBK

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 21food.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 21food.cn main page’s claimed encoding is gbk. 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 21 Food. 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: