Tools & Wizards About Us
51vj.cn screenshot

Report Summary

  • 72

    Performance

    Renders faster than
    82% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 60% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

51vj.cn

微加-企业微信官方推荐的移动办公、在线学习及文化建设平台

Page Load Speed

57.1 sec in total

First Response

11.3 sec

Resources Loaded

42.9 sec

Page Rendered

2.9 sec

51vj.cn screenshot

About Website

Click here to check amazing 51 Vj content for China. Otherwise, check out these important facts you probably never knew about 51vj.cn

微加-基于企业微信开发,腾讯战略合作伙伴,企业微信官方推荐服务商。为企业提供简单实用的移动办公、在线学习及员工交流平台。让传统的内部交流,文化建设等向移动数字化转型。

Visit 51vj.cn

Key Findings

We analyzed 51vj.cn page load time and found that the first response time was 11.3 sec and then it took 45.8 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 were 21 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

51vj.cn performance score

72

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

50/100

10%

LCP (Largest Contentful Paint)

Value3.0 s

78/100

25%

SI (Speed Index)

Value19.2 s

0/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value9.2 s

32/100

10%

Network Requests Diagram

51vj.cn

11277 ms

common.css

7451 ms

index.css

1899 ms

swiper.css

2131 ms

conversion.js

1646 ms

Our browser made a total of 88 requests to load all elements on the main page. We found that 81% of them (71 requests) were addressed to the original 51vj.cn, 6% (5 requests) were made to Ckmap.mediav.com and 2% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (20.5 sec) belongs to the original domain 51vj.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 45.7 kB (74%)

Content Size

61.5 kB

After Optimization

15.8 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of 51vj.cn main page is 61.5 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. 20% of websites need less resources to load. HTML takes 52.0 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 41.7 kB

  • Original 52.0 kB
  • After minification 45.4 kB
  • After compression 10.3 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 6.6 kB, which is 13% 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 41.7 kB or 80% of the original size.

Image Optimization

-35%

Potential reduce by 2.7 kB

  • Original 7.7 kB
  • After minification 5.0 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, 51 Vj needs image optimization as it can save up to 2.7 kB or 35% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-72%

Potential reduce by 1.3 kB

  • Original 1.8 kB
  • After minification 1.3 kB
  • After compression 517 B

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 1.3 kB or 72% of the original size.

Requests Breakdown

Number of requests can be reduced by 26 (41%)

Requests Now

64

After Optimization

38

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51 Vj. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

51vj.cn

51vj.cn

11277 ms

common.css

common.css

7451 ms

index.css

index.css

1899 ms

swiper.css

swiper.css

2131 ms

conversion.js

conversion.js

1646 ms

jquery-1.8.2.min.js

jquery-1.8.2.min.js

5347 ms

OnlineConsultation.js

OnlineConsultation.js

2544 ms

jquery-1.8.2.min.js

jquery-1.8.2.min.js

5614 ms

swiper-2.0.min.js

swiper-2.0.min.js

12157 ms

jquery.divbox.js

jquery.divbox.js

874 ms

jquery.flexslider-min.js

jquery.flexslider-min.js

1421 ms

hm.js

hm.js

628 ms

mvl.js

mvl.js

981 ms

cert_logo_white_l_740149be.png

cert_logo_white_l_740149be.png

1302 ms

jiantou.png

jiantou.png

1744 ms

icon_arrow_right.png

icon_arrow_right.png

439 ms

r1.png

r1.png

1958 ms

iphone1.png

iphone1.png

13095 ms

mail.png

mail.png

3470 ms

text.png

text.png

1795 ms

hyico.jpg

hyico.jpg

3822 ms

arrow.gif

arrow.gif

3364 ms

iphone2.png

iphone2.png

15377 ms

avatar.png

avatar.png

17166 ms

avatar2.png

avatar2.png

19844 ms

circle2.png

circle2.png

5181 ms

ghico.png

ghico.png

4399 ms

iphone3.png

iphone3.png

19844 ms

text2.png

text2.png

8710 ms

circle_blue.png

circle_blue.png

9689 ms

circle_orange.png

circle_orange.png

13392 ms

circle_green.png

circle_green.png

17787 ms

wq.png

wq.png

14968 ms

iphone4.png

iphone4.png

19844 ms

text3.png

text3.png

18496 ms

arrow-left.png

arrow-left.png

18833 ms

arrow-right.png

arrow-right.png

18242 ms

line03.png

line03.png

18731 ms

dw1.png

dw1.png

19842 ms

dw2.png

dw2.png

19845 ms

dw3.png

dw3.png

19847 ms

dw4.png

dw4.png

19848 ms

yd.png

yd.png

19850 ms

gs.png

gs.png

19849 ms

dx.png

dx.png

19850 ms

cl.png

cl.png

19851 ms

hzlhyh.png

hzlhyh.png

19852 ms

lc.png

lc.png

19852 ms

lg.png

lg.png

19853 ms

logo.png

logo.png

1301 ms

qq.png

qq.png

449 ms

erweima.jpg

erweima.jpg

2512 ms

smd.png

smd.png

19823 ms

2wm.jpg

2wm.jpg

20405 ms

hm.gif

hm.gif

306 ms

mba.js

mba.js

144 ms

mv.js

mv.js

932 ms

t

t

1895 ms

close.png

close.png

19010 ms

2wm.jpg

2wm.jpg

20059 ms

b

b

2174 ms

t

t

1113 ms

t

t

1562 ms

erweima.jpg

erweima.jpg

19897 ms

crown.png

crown.png

17532 ms

arrow-right.png

arrow-right.png

17757 ms

banner01.jpg

banner01.jpg

20021 ms

ckmap.htm

ckmap.htm

806 ms

cm.gif

cm.gif

2207 ms

banner04.jpg

banner04.jpg

20454 ms

m

m

461 ms

m

m

1793 ms

banner05.png

banner05.png

19672 ms

m

m

1614 ms

m

m

2493 ms

thumb.png

thumb.png

14073 ms

login_x

login_x

453 ms

dot.gif

dot.gif

13223 ms

use.png

use.png

10153 ms

ask.png

ask.png

12176 ms

arrow1.jpg

arrow1.jpg

8750 ms

arrow2.jpg

arrow2.jpg

8390 ms

arrow3.jpg

arrow3.jpg

6981 ms

cake.png

cake.png

7275 ms

arrow4.jpg

arrow4.jpg

9668 ms

line.gif

line.gif

7021 ms

footer.jpg

footer.jpg

10642 ms

i-float.png

i-float.png

6847 ms

Accessibility Review

51vj.cn accessibility score

85

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

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

Impact

Issue

High

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

Names and labels

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.

Impact

Issue

High

Image elements do not have [alt] attributes

Best Practices

51vj.cn best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

51vj.cn SEO score

76

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

High

robots.txt is not valid

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

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/).

Impact

Issue

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 51vj.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 51vj.cn 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

51vj.cn

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