Tools & Wizards About Us

Report Summary

  • 70

    Performance

    Renders faster than
    81% of other websites

  • 47

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 58

    SEO

    Google-friendlier than
    21% of websites

nn.school51.com

南宁无忧网 -校园无忧网 -【南宁兼职 南宁校园兼职 南宁蚂蚁兼职 大学生兼职 大学生交友 大学生培训 大学生活动】

Page Load Speed

9.9 sec in total

First Response

870 ms

Resources Loaded

8.3 sec

Page Rendered

704 ms

About Website

Visit nn.school51.com now to see the best up-to-date Nn School 51 content for United States and also check out these interesting facts you probably never knew about nn.school51.com

校园无忧网(www.school51.com)是一家面向E时代大学生大型校园门户网站，分别在合肥、长沙、南昌、武汉、福州、太原、石家庄、杭州、南宁、昆明、济南、郑州、西安、呼和浩特、芜湖、洛阳、保定、南京、天津、桂林等高校密集的大型城市设立分支机构，SCHOOL51历经了10年的发展，现已成为深入校园，学生参与量巨大的校园门户网站，SCHOOL51立足校园，服务至上！全力打造全国最大的大学校园门户...

Visit nn.school51.com

Key Findings

We analyzed Nn.school51.com page load time and found that the first response time was 870 ms and then it took 9 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

nn.school51.com performance score

70

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

76/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

32/100

25%

SI (Speed Index)

Value7.4 s

27/100

10%

TBT (Total Blocking Time)

Value110 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.012

100/100

15%

TTI (Time to Interactive)

Value5.2 s

74/100

10%

Network Requests Diagram

nn.school51.com

870 ms

public.css

727 ms

jquery.js

916 ms

lhgdialog.js

726 ms

S.js

733 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Nn.school51.com, 40% (17 requests) were made to Imgcache.school51.com and 23% (10 requests) were made to Img200.school51.com. The less responsive or slowest element that took the longest time to load (3.2 sec) relates to the external source Img200.school51.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 97.8 kB (11%)

Content Size

891.6 kB

After Optimization

793.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nn.school51.com main page is 891.6 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 753.9 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 50.8 kB

  • Original 65.0 kB
  • After minification 62.2 kB
  • After compression 14.1 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 50.8 kB or 78% of the original size.

Image Optimization

-5%

Potential reduce by 34.9 kB

  • Original 753.9 kB
  • After minification 719.0 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. Nn School 51 images are well optimized though.

JavaScript Optimization

-13%

Potential reduce by 7.1 kB

  • Original 55.6 kB
  • After minification 55.6 kB
  • After compression 48.5 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 7.1 kB or 13% of the original size.

CSS Optimization

-29%

Potential reduce by 5.0 kB

  • Original 17.1 kB
  • After minification 17.1 kB
  • After compression 12.1 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. Nn.school51.com needs all CSS files to be minified and compressed as it can save up to 5.0 kB or 29% of the original size.

Requests Breakdown

Number of requests can be reduced by 19 (46%)

Requests Now

41

After Optimization

22

  • Images
  • JavaScript
  • CSS

The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nn School 51. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

nn.school51.com accessibility score

47

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.

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

Best Practices

nn.school51.com best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

nn.school51.com SEO score

58

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

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

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 Nn.school51.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 Nn.school51.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

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