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name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

31/100

10%

LCP (Largest Contentful Paint)

Value7.0 s

6/100

25%

SI (Speed Index)

Value8.5 s

17/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.287

42/100

15%

TTI (Time to Interactive)

Value9.8 s

28/100

10%

4001800288.com

2506 ms

visittrack.js

10456 ms

bg1.jpg

7723 ms

logo.png

6947 ms

Our browser made a total of 4 requests to load all elements on the main page. We found that 75% of them (3 requests) were addressed to the original 4001800288.com, 25% (1 request) were made to Ztouch2.gather.shushang-z.cn. The less responsive or slowest element that took the longest time to load (10.5 sec) relates to the external source Ztouch2.gather.shushang-z.cn.

Content Size

108.7 kB

After Optimization

39.1 kB

In fact, the total size of 4001800288.com main page is 108.7 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. Only 5% of websites need less resources to load. Images take 78.3 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 12.0 kB

Original 13.6 kB
After minification 7.3 kB
After compression 1.6 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 6.3 kB, which is 47% 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 12.0 kB or 88% of the original size.

Image Optimization

-57%

Potential reduce by 44.8 kB

Original 78.3 kB
After minification 33.5 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. Obviously, 4001800288 needs image optimization as it can save up to 44.8 kB or 57% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-77%

Potential reduce by 12.9 kB

Original 16.8 kB
After minification 11.7 kB
After compression 3.9 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 12.9 kB or 77% of the original size.

Requests Now

After Optimization

The browser has sent 3 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 4001800288. According to our analytics all requests are already optimized.

Accessibility Issues

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

High

[aria-hidden="true"] elements contain focusable descendents

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 semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

Image elements do not have [alt] attributes

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

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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 4001800288.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 4001800288.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

Open Graph description is not detected on the main page of 4001800288. 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: