Access wisdomchem.com. 北京维达化工有限公司--北京维达化工|维达化工有限公司|北京维达化工有限公司

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

64/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value8.3 s

19/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value4.2 s

85/100

10%

wisdomchem.com

905 ms

wap_jquery.js

429 ms

wap_menu1.js

448 ms

wap_menu1.css

451 ms

Common.css

458 ms

Our browser made a total of 52 requests to load all elements on the main page. We found that all of those requests were addressed to Wisdomchem.com and no external sources were called. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Wisdomchem.com.

Content Size

3.2 MB

After Optimization

3.0 MB

In fact, the total size of Wisdomchem.com main page is 3.2 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. 40% of websites need less resources to load. Images take 3.0 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 31.4 kB

Original 40.0 kB
After minification 37.1 kB
After compression 8.6 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. 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 31.4 kB or 78% of the original size.

Image Optimization

-4%

Potential reduce by 127.5 kB

Original 3.0 MB
After minification 2.9 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. Wisdomchem images are well optimized though.

JavaScript Optimization

-33%

Potential reduce by 40.0 kB

Original 122.0 kB
After minification 119.6 kB
After compression 82.0 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 40.0 kB or 33% of the original size.

CSS Optimization

-17%

Potential reduce by 3.5 kB

Original 19.9 kB
After minification 19.9 kB
After compression 16.5 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. Wisdomchem.com needs all CSS files to be minified and compressed as it can save up to 3.5 kB or 17% of the original size.

Requests Now

After Optimization

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Wisdomchem. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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

High

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

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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

Links do not have a discernible name

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

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

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

High

Tap targets are not sized appropriately

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 Wisdomchem.com 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 Wisdomchem.com 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

wisdomchem.com

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

Report Summary

Performance

Accessibility

Best Practices

SEO

北京维达化工有限公司--北京维达化工|维达化工有限公司|北京维达化工有限公司

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

wisdomchem.com

wap_jquery.js

wap_menu1.js

wap_menu1.css

Common.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

wisdomchem.com

wap_jquery.js

wap_menu1.js

wap_menu1.css

Common.css

5d22e70ce4b0f9ed474ede4b.css

animate.min.css

index.css

resetcommon.css

jquery.js

superslide.2.1.js

jquery-1.11.0.min.js

wap_TouchSlide.1.1.js

wow.min.js

5d22e70ce4b0f9ed474ede4b.js

logo.jpg

a1.jpg

a2.jpg

a3.jpg

w_logo1.jpg

wap_ba1.jpg

wap_ba2.jpg

wap_ba3.jpg

ab_ico01.png

ab_ico02.png

ab_ico03.png

400x400_61a71f8805971.jpg

400x400_61a71fdd9130b.jpg

400x400_61a7200ceb970.jpg

more.gif

ewm.jpg

gongan.png

fmenu1.png

fmenu6.png

fmenu2.png

fmenu3.png

fmenu5.png

slider-arrow.png

01.jpg

ab_tbg.gif

ab_k1.png

ab_line.gif

pro.jpg