Access vbol.cn. 排球在线,最具影响力的专业排球网站

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

82/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

47/100

25%

SI (Speed Index)

Value6.5 s

39/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.033

100/100

15%

TTI (Time to Interactive)

Value3.0 s

96/100

10%

portal.php

17986 ms

style_1_common.css

16743 ms

common.js

10488 ms

portal.js

2987 ms

inf.js

290 ms

Our browser made a total of 109 requests to load all elements on the main page. We found that 38% of them (41 requests) were addressed to the original Vbol.cn, 25% (27 requests) were made to Asearch.alicdn.com and 4% (4 requests) were made to Img.alicdn.com. The less responsive or slowest element that took the longest time to load (19.8 sec) belongs to the original domain Vbol.cn.

Content Size

484.2 kB

After Optimization

338.2 kB

In fact, the total size of Vbol.cn main page is 484.2 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. 40% of websites need less resources to load. Images take 271.0 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 43.5 kB

Original 57.9 kB
After minification 57.7 kB
After compression 14.4 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. 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 43.5 kB or 75% of the original size.

Image Optimization

-6%

Potential reduce by 15.9 kB

Original 271.0 kB
After minification 255.1 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. Vbol images are well optimized though.

JavaScript Optimization

-55%

Potential reduce by 82.3 kB

Original 149.4 kB
After minification 125.4 kB
After compression 67.1 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 82.3 kB or 55% of the original size.

CSS Optimization

-74%

Potential reduce by 4.4 kB

Original 5.9 kB
After minification 5.9 kB
After compression 1.5 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. Vbol.cn needs all CSS files to be minified and compressed as it can save up to 4.4 kB or 74% of the original size.

Requests Now

105

After Optimization

The browser has sent 105 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vbol. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts 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

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

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

GBK

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vbol.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 Vbol.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

vbol.cn

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

排球在线,最具影响力的专业排球网站 - Powered by Discuz!

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

portal.php

style_1_common.css

common.js

portal.js

inf.js

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

portal.php

style_1_common.css

common.js

portal.js

inf.js

logging.js

crystal2.js

ping.js

background.png

1062224

1063034

logo.png

qq_login.gif

weibo_login.png

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fdc681b81d910fb0bf776f6ba4577182.jpg

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48d7dfb9c11690252d50e4dbd558f68b.jpg

110413qmduy4serxlm81yo.gif

site_qq.jpg

security.png

followbutton.php

main.js

px.png

pn.png

nv.png

qmenu.png

nv_a.png

arr_w.gif

search.png