Tools & Wizards About Us
cl3.ust.hk screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 89% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

cl3.ust.hk

首页 | 香港科技大学-持续进修学院（ACE）

Page Load Speed

3.8 sec in total

First Response

961 ms

Resources Loaded

2.8 sec

Page Rendered

122 ms

cl3.ust.hk screenshot

About Website

Click here to check amazing Cl 3 Ust content for China. Otherwise, check out these important facts you probably never knew about cl3.ust.hk

Visit cl3.ust.hk

Key Findings

We analyzed Cl3.ust.hk page load time and found that the first response time was 961 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

cl3.ust.hk performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value19.4 s

0/100

10%

LCP (Largest Contentful Paint)

Value38.0 s

0/100

25%

SI (Speed Index)

Value35.9 s

0/100

10%

TBT (Total Blocking Time)

Value130 ms

96/100

30%

CLS (Cumulative Layout Shift)

Value1.192

1/100

15%

TTI (Time to Interactive)

Value34.3 s

0/100

10%

Network Requests Diagram

cl3.ust.hk

961 ms

style.css

468 ms

index_banner.gif

481 ms

spacer.gif

482 ms

index_front_img.jpg

1192 ms

Our browser made a total of 7 requests to load all elements on the main page. We found that 86% of them (6 requests) were addressed to the original Cl3.ust.hk, 14% (1 request) were made to Home-cgi.ust.hk. The less responsive or slowest element that took the longest time to load (1.8 sec) relates to the external source Home-cgi.ust.hk.

Page Optimization Overview & Recommendations

Page size can be reduced by 17.8 kB (26%)

Content Size

69.6 kB

After Optimization

51.8 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Cl3.ust.hk main page is 69.6 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. Images take 59.9 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 6.8 kB

  • Original 8.4 kB
  • After minification 5.5 kB
  • After compression 1.6 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 2.9 kB, which is 34% 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 6.8 kB or 81% of the original size.

Image Optimization

-17%

Potential reduce by 10.1 kB

  • Original 59.9 kB
  • After minification 49.8 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, Cl 3 Ust needs image optimization as it can save up to 10.1 kB or 17% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-70%

Potential reduce by 905 B

  • Original 1.3 kB
  • After minification 973 B
  • After compression 389 B

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. Cl3.ust.hk needs all CSS files to be minified and compressed as it can save up to 905 B or 70% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

6

After Optimization

6

  • Images
  • CSS

The browser has sent 6 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cl 3 Ust. According to our analytics all requests are already optimized.

Network Requests Diagram

cl3.ust.hk

cl3.ust.hk

961 ms

style.css

style.css

468 ms

index_banner.gif

index_banner.gif

481 ms

spacer.gif

spacer.gif

482 ms

index_front_img.jpg

index_front_img.jpg

1192 ms

Count.cgi

Count.cgi

1799 ms

index_footer_left.jpg

index_footer_left.jpg

760 ms

Accessibility Review

cl3.ust.hk accessibility score

96

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

Links do not have a discernible name

Best Practices

cl3.ust.hk 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

Page has valid source maps

SEO Factors

cl3.ust.hk SEO score

86

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

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

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    EN

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cl3.ust.hk can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed English language. Our system also found out that Cl3.ust.hk main page’s claimed encoding is iso-8859-1. 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

cl3.ust.hk

Open Graph description is not detected on the main page of Cl 3 Ust. 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: