Tools & Wizards About Us
rjxy.bjtu.edu.cn screenshot

Report Summary

  • 67

    Performance

    Renders faster than
    80% of other websites

  • 49

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 50

    SEO

    Google-friendlier than
    18% of websites

rjxy.bjtu.edu.cn

北京交通大学--软件学院首页

Page Load Speed

61.2 sec in total

First Response

17.1 sec

Resources Loaded

43.8 sec

Page Rendered

290 ms

rjxy.bjtu.edu.cn screenshot

About Website

Click here to check amazing Rjxy Bjtu content for China. Otherwise, check out these important facts you probably never knew about rjxy.bjtu.edu.cn

Visit rjxy.bjtu.edu.cn

Key Findings

We analyzed Rjxy.bjtu.edu.cn page load time and found that the first response time was 17.1 sec and then it took 44.1 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 was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

rjxy.bjtu.edu.cn performance score

67

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.0 s

100/100

10%

LCP (Largest Contentful Paint)

Value5.4 s

19/100

25%

SI (Speed Index)

Value6.0 s

46/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.064

97/100

15%

TTI (Time to Interactive)

Value9.9 s

27/100

10%

Network Requests Diagram

rjxy.bjtu.edu.cn

17076 ms

newCss.css

11715 ms

c.gif

317 ms

dhgd.png

314 ms

tzButton.png

619 ms

Our browser made a total of 25 requests to load all elements on the main page. We found that all of those requests were addressed to Rjxy.bjtu.edu.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (20.5 sec) belongs to the original domain Rjxy.bjtu.edu.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 21.1 kB (76%)

Content Size

27.8 kB

After Optimization

6.7 kB

  • HTML
  • Images

In fact, the total size of Rjxy.bjtu.edu.cn main page is 27.8 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. HTML takes 25.2 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 21.0 kB

  • Original 25.2 kB
  • After minification 21.6 kB
  • After compression 4.2 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 3.6 kB, which is 14% 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 21.0 kB or 83% of the original size.

Image Optimization

-6%

Potential reduce by 141 B

  • Original 2.6 kB
  • After minification 2.4 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. Rjxy Bjtu images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 11 (50%)

Requests Now

22

After Optimization

11

  • AJAX
  • Images
  • CSS

The browser has sent 22 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rjxy Bjtu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

rjxy.bjtu.edu.cn

rjxy.bjtu.edu.cn

17076 ms

newCss.css

newCss.css

11715 ms

c.gif

c.gif

317 ms

dhgd.png

dhgd.png

314 ms

tzButton.png

tzButton.png

619 ms

pic_01.jpg

pic_01.jpg

5463 ms

yqljtb.png

yqljtb.png

1242 ms

top.png

top.png

20466 ms

top2.png

top2.png

1542 ms

dh.png

dh.png

612 ms

login_sub_notLogin_new.jsp

login_sub_notLogin_new.jsp

9381 ms

index_common_ggl_zyxx3_new.jsp

index_common_ggl_zyxx3_new.jsp

11010 ms

index_common_ggl_zyxx2_new.jsp

index_common_ggl_zyxx2_new.jsp

6366 ms

index_common_ggl_zyxx2_new.jsp

index_common_ggl_zyxx2_new.jsp

13084 ms

index_common_ggl_zyxx2_new.jsp

index_common_ggl_zyxx2_new.jsp

6315 ms

index_common_ggl_zyxx4_new.jsp

index_common_ggl_zyxx4_new.jsp

7712 ms

tzTop.png

tzTop.png

6698 ms

htdl.png

htdl.png

12926 ms

yqlj.png

yqlj.png

7980 ms

xwdt.png

xwdt.png

9259 ms

d.png

d.png

9582 ms

bq.png

bq.png

9645 ms

pagestyle_trans.css

pagestyle_trans.css

4394 ms

indexpage2.js

indexpage2.js

4503 ms

xy_05.gif

xy_05.gif

349 ms

Accessibility Review

rjxy.bjtu.edu.cn accessibility score

49

Accessibility Issues

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

rjxy.bjtu.edu.cn 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

rjxy.bjtu.edu.cn SEO score

50

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

    GBK

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

rjxy.bjtu.edu.cn

Open Graph description is not detected on the main page of Rjxy Bjtu. 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: