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biochema.cn screenshot

0

Performance
66

Accessibility

Visual factors better than
that of 31% of websites
83

Best Practices

More advanced features
available than in
55% of websites
92

SEO

Google-friendlier than
74% of websites

First Response

917 ms

Resources Loaded

23.2 sec

Page Rendered

336 ms

biochema.cn screenshot

About Website

Click here to check amazing Biochema content. Otherwise, check out these important facts you probably never knew about biochema.cn

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Visit biochema.cn

Key Findings

We analyzed Biochema.cn page load time and found that the first response time was 917 ms and then it took 23.5 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 was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

name

value

score

weighting

FCP (First Contentful Paint)

Value6.4 s

2/100

10%

LCP (Largest Contentful Paint)

Value0

0/100

25%

SI (Speed Index)

Value14.8 s

1/100

10%

TBT (Total Blocking Time)

Value170 ms

92/100

30%

CLS (Cumulative Layout Shift)

Value0.189

65/100

15%

TTI (Time to Interactive)

Value25.9 s

0/100

10%

index.php

917 ms

bootstrap.min.css

639 ms

animate.min.css

433 ms

owl.carousel.min.css

437 ms

fontawesome.min.css

653 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 89% of them (49 requests) were addressed to the original Biochema.cn, 5% (3 requests) were made to Qg719.com and 4% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (19.8 sec) relates to the external source Push.zhanzhang.baidu.com.

Content Size

4.3 MB

After Optimization

3.4 MB

In fact, the total size of Biochema.cn main page is 4.3 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. 60% of websites need less resources to load. Images take 4.1 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 33.1 kB

Original 40.5 kB
After minification 32.1 kB
After compression 7.4 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. This page needs HTML code to be minified as it can gain 8.3 kB, which is 21% 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 33.1 kB or 82% of the original size.

Image Optimization

-19%

Potential reduce by 796.3 kB

Original 4.1 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. Obviously, Biochema needs image optimization as it can save up to 796.3 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 461 B

Original 32.8 kB
After minification 32.8 kB
After compression 32.3 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

-6%

Potential reduce by 4.8 kB

Original 74.7 kB
After minification 74.7 kB
After compression 69.9 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. Biochema.cn has all CSS files already compressed.

Requests Now

48

After Optimization

32

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Biochema. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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.

High

<frame> or <iframe> elements do not have a title

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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/).

High

Document uses legible font sizes

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 Biochema.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 Biochema.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

biochema.cn

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