Tools & Wizards About Us
forum.51nb.com screenshot

Report Summary

  • 89

    Performance

    Renders faster than
    90% of other websites

  • 50

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

forum.51nb.com

登录 - 专门网

Page Load Speed

38.5 sec in total

First Response

1.1 sec

Resources Loaded

37 sec

Page Rendered

368 ms

forum.51nb.com screenshot

About Website

Click here to check amazing Forum 51 Nb content for United States. Otherwise, check out these important facts you probably never knew about forum.51nb.com

,专门网

Visit forum.51nb.com

Key Findings

We analyzed Forum.51nb.com page load time and found that the first response time was 1.1 sec and then it took 37.4 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.

Performance Metrics

forum.51nb.com performance score

89

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

71/100

10%

LCP (Largest Contentful Paint)

Value2.4 s

92/100

25%

SI (Speed Index)

Value5.7 s

51/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.055

98/100

15%

TTI (Time to Interactive)

Value3.1 s

95/100

10%

Network Requests Diagram

forum.php

1138 ms

style_3_common.css

2320 ms

style_3_forum_index.css

1000 ms

common.js

15511 ms

style_3_widthauto.css

1008 ms

Our browser made a total of 81 requests to load all elements on the main page. We found that 41% of them (33 requests) were addressed to the original Forum.51nb.com, 7% (6 requests) were made to Cpro.baidustatic.com and 6% (5 requests) were made to A.alimama.cn. The less responsive or slowest element that took the longest time to load (15.5 sec) belongs to the original domain Forum.51nb.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 406.1 kB (40%)

Content Size

1.0 MB

After Optimization

597.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Forum.51nb.com main page is 1.0 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. 35% of websites need less resources to load. Images take 563.7 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 55.3 kB

  • Original 71.0 kB
  • After minification 65.2 kB
  • After compression 15.7 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. 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 55.3 kB or 78% of the original size.

Image Optimization

-19%

Potential reduce by 104.6 kB

  • Original 563.7 kB
  • After minification 459.1 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. Obviously, Forum 51 Nb needs image optimization as it can save up to 104.6 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-63%

Potential reduce by 175.1 kB

  • Original 277.3 kB
  • After minification 253.6 kB
  • After compression 102.2 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 175.1 kB or 63% of the original size.

CSS Optimization

-78%

Potential reduce by 71.1 kB

  • Original 91.6 kB
  • After minification 89.6 kB
  • After compression 20.6 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. Forum.51nb.com needs all CSS files to be minified and compressed as it can save up to 71.1 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 38 (48%)

Requests Now

79

After Optimization

41

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 79 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Forum 51 Nb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

forum.php

forum.php

1138 ms

style_3_common.css

style_3_common.css

2320 ms

style_3_forum_index.css

style_3_forum_index.css

1000 ms

common.js

common.js

15511 ms

style_3_widthauto.css

style_3_widthauto.css

1008 ms

forum.js

forum.js

2783 ms

logging.js

logging.js

2531 ms

md5.js

md5.js

3633 ms

title.js

title.js

1879 ms

c.js

c.js

751 ms

discuz_tips.js

discuz_tips.js

477 ms

hm.js

hm.js

4222 ms

sznet110wangan.gif

sznet110wangan.gif

2026 ms

logo.jpg

logo.jpg

4070 ms

wechat_login.png

wechat_login.png

517 ms

weibo_login.png

weibo_login.png

954 ms

51nbshop.gif

51nbshop.gif

10041 ms

top_sks.gif

top_sks.gif

6197 ms

toppost_3.gif

toppost_3.gif

866 ms

top_post4.gif

top_post4.gif

5538 ms

top_post5.gif

top_post5.gif

11753 ms

wx51nb.jpg

wx51nb.jpg

2330 ms

collapsed_no.gif

collapsed_no.gif

4596 ms

forum.gif

forum.gif

4620 ms

forum_new.gif

forum_new.gif

5015 ms

collapsed_yes.gif

collapsed_yes.gif

5662 ms

wpc1.gif

wpc1.gif

5966 ms

wpc2.gif

wpc2.gif

5963 ms

sznet110gangting.gif

sznet110gangting.gif

11777 ms

px.png

px.png

7367 ms

newarow.gif

newarow.gif

7115 ms

search.png

search.png

6306 ms

qmenu.png

qmenu.png

10303 ms

eis_nv.png

eis_nv.png

10425 ms

followbutton.php

followbutton.php

2547 ms

pt_item.png

pt_item.png

7449 ms

chart.png

chart.png

7685 ms

listbg.gif

listbg.gif

7764 ms

tkapi.js

tkapi.js

277 ms

gczm

gczm

1003 ms

juejinlian.js

juejinlian.js

1615 ms

jj

jj

12978 ms

md.js

md.js

1436 ms

click.js

click.js

35 ms

plugin.js

plugin.js

33 ms

load

load

983 ms

gczm

gczm

3110 ms

keyword.js

keyword.js

143 ms

aroundbox.js

aroundbox.js

186 ms

jsonp.php

jsonp.php

1144 ms

followButton.css

followButton.css

402 ms

sso.js

sso.js

19 ms

followButton.js

followButton.js

16 ms

suda.js

suda.js

18 ms

adx.php

adx.php

998 ms

u=8559955,4233624494&fm=76

u=8559955,4233624494&fm=76

3341 ms

u=817453632,4149759536&fm=76

u=817453632,4149759536&fm=76

2784 ms

u=780430079,1199121111&fm=76

u=780430079,1199121111&fm=76

1834 ms

reduce_bd-logo1_oper.png

reduce_bd-logo1_oper.png

511 ms

u=1597979326,2307730061&fm=76

u=1597979326,2307730061&fm=76

2823 ms

u=853365190,4230191246&fm=76

u=853365190,4230191246&fm=76

1835 ms

u=1681243309,2494842219&fm=76

u=1681243309,2494842219&fm=76

1914 ms

u=4136066485,3929238717&fm=76

u=4136066485,3929238717&fm=76

2802 ms

u=1814984403,2554246531&fm=76

u=1814984403,2554246531&fm=76

1730 ms

u=1364289134,2040624832&fm=76

u=1364289134,2040624832&fm=76

6072 ms

9a.gif

9a.gif

3830 ms

bg_flbtn.png

bg_flbtn.png

39 ms

b.gif

b.gif

968 ms

hm.gif

hm.gif

453 ms

app.gif

app.gif

4331 ms

closefeedback.min.js

closefeedback.min.js

477 ms

reduce_promotion_oper.png

reduce_promotion_oper.png

471 ms

bd_logo.png

bd_logo.png

474 ms

bg_rb.png

bg_rb.png

477 ms

jj

jj

506 ms

scrolltop.png

scrolltop.png

284 ms

o.htm

o.htm

2535 ms

hm.gif

hm.gif

720 ms

ac.js

ac.js

503 ms

wh.js

wh.js

799 ms

fp.htm

fp.htm

759 ms

Accessibility Review

forum.51nb.com accessibility score

50

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.

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

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

forum.51nb.com best practices score

75

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

forum.51nb.com SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Page is blocked from indexing

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

    GBK

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Forum.51nb.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 Forum.51nb.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

forum.51nb.com

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