Access 21spv.com. 阳光工匠光伏网_主流光伏行业媒体商务平台

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

19/100

10%

LCP (Largest Contentful Paint)

Value6.8 s

7/100

25%

SI (Speed Index)

Value10.6 s

7/100

10%

TBT (Total Blocking Time)

Value100 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.069

96/100

15%

TTI (Time to Interactive)

Value6.4 s

60/100

10%

21spv.com

5247 ms

style.css

7786 ms

yx_rotaion.css

7405 ms

index.css

7913 ms

lang.js

8249 ms

Our browser made a total of 117 requests to load all elements on the main page. We found that 71% of them (83 requests) were addressed to the original 21spv.com, 7% (8 requests) were made to Bbs.21spv.com and 3% (4 requests) were made to Tjs.sjs.sinajs.cn. The less responsive or slowest element that took the longest time to load (20.3 sec) belongs to the original domain 21spv.com.

Content Size

692.3 kB

After Optimization

348.6 kB

In fact, the total size of 21spv.com main page is 692.3 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. 35% of websites need less resources to load. Javascripts take 338.7 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 69.8 kB

Original 88.6 kB
After minification 78.8 kB
After compression 18.7 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 9.8 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 69.8 kB or 79% of the original size.

Image Optimization

-13%

Potential reduce by 28.8 kB

Original 215.3 kB
After minification 186.5 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, 21 Spv needs image optimization as it can save up to 28.8 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-61%

Potential reduce by 205.6 kB

Original 338.7 kB
After minification 303.3 kB
After compression 133.2 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 205.6 kB or 61% of the original size.

CSS Optimization

-79%

Potential reduce by 39.5 kB

Original 49.7 kB
After minification 44.8 kB
After compression 10.2 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. 21spv.com needs all CSS files to be minified and compressed as it can save up to 39.5 kB or 79% of the original size.

Requests Now

103

After Optimization

The browser has sent 103 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 21 Spv. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 31 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

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

Low

Detected JavaScript libraries

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

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 21spv.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 21spv.com 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

21spv.com

Open Graph description is not detected on the main page of 21 Spv. 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

阳光工匠光伏网_主流光伏行业媒体商务平台

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

21spv.com

style.css

yx_rotaion.css

index.css

lang.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

21spv.com

style.css

yx_rotaion.css

index.css

lang.js

config.js

jquery.js

common.js

page.js

jquery-1.8.0.min.js

gundong.js

MSClass.js

ZeroClipboard.js

jquery.min.js

jquery.yx_rotaion.js

jquery-1.8.3.min.js

list=gb_csiq,gb_jaso,gb_tsl,gb_stp,gb_yge,gb_ldk,gb_csun,gb_hsol,gb_ldk,gb_sol,gb_jks,gb_dq

2013_sinaStock.js

api.php

api.php

api.php

api.php

api.php

index.js

marquee.js

wb.js

top.js

getLogonStatusBxt.js

ico_wap.gif

common_ico.gif

09-35-02-21-1.png

head_search.png

spacer.gif

wxh_bg.jpg

wxh.jpg

menu_bg.png

16-50-45-30-1.png

i_icon.jpg

14-48-01-42-1.png

sdrz_logo.jpg

zzrz_logo.jpg

sfzz_logo.jpg

11-49-30-79-16.jpg