Tools & Wizards About Us

Report Summary

  • 37

    Performance

    Renders faster than
    56% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

www1.se.cuhk.edu.hk

Department of Systems Engineering and Engineering Management, CUHK

Page Load Speed

8.6 sec in total

First Response

1.1 sec

Resources Loaded

7.2 sec

Page Rendered

343 ms

About Website

Visit www1.se.cuhk.edu.hk now to see the best up-to-date Www 1 Se CUHK content for China and also check out these interesting facts you probably never knew about www1.se.cuhk.edu.hk

We are an academic department in CUHK with programmes combine technology with management, and with mission to educate engineers to solve real-world problems in smart ways.

Visit www1.se.cuhk.edu.hk

Key Findings

We analyzed Www1.se.cuhk.edu.hk page load time and found that the first response time was 1.1 sec and then it took 7.5 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

www1.se.cuhk.edu.hk performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value10.4 s

0/100

10%

LCP (Largest Contentful Paint)

Value10.6 s

0/100

25%

SI (Speed Index)

Value21.1 s

0/100

10%

TBT (Total Blocking Time)

Value320 ms

76/100

30%

CLS (Cumulative Layout Shift)

Value0.075

95/100

15%

TTI (Time to Interactive)

Value20.8 s

2/100

10%

Network Requests Diagram

www1.se.cuhk.edu.hk

1065 ms

www.se.cuhk.edu.hk

776 ms

www.se.cuhk.edu.hk

1220 ms

style.min.css

392 ms

mediaelementplayer-legacy.min.css

569 ms

Our browser made a total of 107 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Www1.se.cuhk.edu.hk, 85% (91 requests) were made to Se.cuhk.edu.hk and 9% (10 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.8 sec) relates to the external source Se.cuhk.edu.hk.

Page Optimization Overview & Recommendations

Page size can be reduced by 497.1 kB (15%)

Content Size

3.2 MB

After Optimization

2.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Www1.se.cuhk.edu.hk main page is 3.2 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. 70% of websites need less resources to load. Images take 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 137.8 kB

  • Original 164.2 kB
  • After minification 156.3 kB
  • After compression 26.5 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 137.8 kB or 84% of the original size.

Image Optimization

-14%

Potential reduce by 316.4 kB

  • Original 2.3 MB
  • After minification 2.0 MB

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, Www 1 Se CUHK needs image optimization as it can save up to 316.4 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 5.7 kB

  • Original 542.4 kB
  • After minification 542.4 kB
  • After compression 536.7 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. This website has mostly compressed JavaScripts.

CSS Optimization

-17%

Potential reduce by 37.2 kB

  • Original 215.5 kB
  • After minification 213.4 kB
  • After compression 178.3 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. Www1.se.cuhk.edu.hk needs all CSS files to be minified and compressed as it can save up to 37.2 kB or 17% of the original size.

Requests Breakdown

Number of requests can be reduced by 71 (77%)

Requests Now

92

After Optimization

21

  • Images
  • JavaScript
  • CSS

The browser has sent 92 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Www 1 Se CUHK. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 33 to 1 for JavaScripts and from 40 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

www1.se.cuhk.edu.hk accessibility score

74

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

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

www1.se.cuhk.edu.hk best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

www1.se.cuhk.edu.hk SEO score

75

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Www1.se.cuhk.edu.hk can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Www1.se.cuhk.edu.hk 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 data is detected on the main page of Www 1 Se CUHK. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: