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51wlcg.com screenshot

69

Performance

Renders faster than
81% of other websites
48

Accessibility

Visual factors better than
that of 20% of websites
50

Best Practices

More advanced features
available than in
18% of websites
58

SEO

Google-friendlier than
20% of websites

First Response

18.1 sec

Resources Loaded

39 sec

Page Rendered

1.8 sec

51wlcg.com screenshot

About Website

Welcome to 51wlcg.com homepage info - get ready to check 51 Wlcg best content right away, or after learning these important things about 51wlcg.com

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Visit 51wlcg.com

Key Findings

We analyzed 51wlcg.com page load time and found that the first response time was 18.1 sec and then it took 40.8 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number 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)

Value2.4 s

71/100

10%

LCP (Largest Contentful Paint)

Value4.9 s

29/100

25%

SI (Speed Index)

Value42.5 s

0/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value3.5 s

92/100

10%

51wlcg.com

18114 ms

highslide.css

704 ms

Style.css

936 ms

SlidePlayer.css

481 ms

CkBox.css

481 ms

Our browser made a total of 153 requests to load all elements on the main page. We found that 97% of them (148 requests) were addressed to the original 51wlcg.com, 1% (1 request) were made to Odr.jsdsgsxt.gov.cn and 1% (1 request) were made to Js.users.51.la. The less responsive or slowest element that took the longest time to load (19.9 sec) relates to the external source Auth.jsia.org.cn.

Content Size

1.7 MB

After Optimization

1.5 MB

In fact, the total size of 51wlcg.com main page is 1.7 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. 50% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 134.4 kB

Original 173.2 kB
After minification 153.9 kB
After compression 38.8 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 19.3 kB, which is 11% 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 134.4 kB or 78% of the original size.

Image Optimization

-3%

Potential reduce by 47.2 kB

Original 1.4 MB
After minification 1.4 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. 51 Wlcg images are well optimized though.

JavaScript Optimization

-29%

Potential reduce by 23.3 kB

Original 79.8 kB
After minification 79.8 kB
After compression 56.4 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 23.3 kB or 29% of the original size.

CSS Optimization

-36%

Potential reduce by 7.3 kB

Original 20.2 kB
After minification 20.2 kB
After compression 12.9 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. 51wlcg.com needs all CSS files to be minified and compressed as it can save up to 7.3 kB or 36% of the original size.

Requests Now

148

After Optimization

92

The browser has sent 148 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51 Wlcg. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 4 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 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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

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

High

Links are not crawlable

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

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 51wlcg.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 51wlcg.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

51wlcg.com

Open Graph description is not detected on the main page of 51 Wlcg. 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: