Report Summary

  • 6

    Performance

    Renders faster than
    21% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 67% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

tl.hku.hk

HKU Teaching and Learning

Page Load Speed

12.6 sec in total

First Response

3.1 sec

Resources Loaded

9.4 sec

Page Rendered

208 ms

tl.hku.hk screenshot

About Website

Visit tl.hku.hk now to see the best up-to-date Tl HKU content for China and also check out these interesting facts you probably never knew about tl.hku.hk

Everything about teaching and learning in the University of Hong Kong

Visit tl.hku.hk

Key Findings

We analyzed Tl.hku.hk page load time and found that the first response time was 3.1 sec and then it took 9.6 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

tl.hku.hk performance score

6

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value19.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value37.6 s

0/100

25%

SI (Speed Index)

Value30.4 s

0/100

10%

TBT (Total Blocking Time)

Value4,390 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.326

35/100

15%

TTI (Time to Interactive)

Value34.3 s

0/100

10%

Network Requests Diagram

tl.hku.hk

3052 ms

nggallery.css

748 ms

shutter-reloaded.css

502 ms

royalslider.css

499 ms

rs-default-inverted.css

750 ms

Our browser made a total of 96 requests to load all elements on the main page. We found that 74% of them (71 requests) were addressed to the original Tl.hku.hk, 9% (9 requests) were made to Ajax.useso.com and 7% (7 requests) were made to Fontstatic.useso.com. The less responsive or slowest element that took the longest time to load (3.6 sec) belongs to the original domain Tl.hku.hk.

Page Optimization Overview & Recommendations

Page size can be reduced by 832.0 kB (34%)

Content Size

2.4 MB

After Optimization

1.6 MB

In fact, the total size of Tl.hku.hk main page is 2.4 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. 60% of websites need less resources to load. Images take 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 42.0 kB

  • Original 51.7 kB
  • After minification 49.1 kB
  • After compression 9.7 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 42.0 kB or 81% of the original size.

Image Optimization

-11%

Potential reduce by 174.3 kB

  • Original 1.6 MB
  • After minification 1.4 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, Tl HKU needs image optimization as it can save up to 174.3 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-70%

Potential reduce by 421.5 kB

  • Original 600.1 kB
  • After minification 561.2 kB
  • After compression 178.7 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 421.5 kB or 70% of the original size.

CSS Optimization

-91%

Potential reduce by 194.3 kB

  • Original 213.1 kB
  • After minification 121.5 kB
  • After compression 18.9 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. Tl.hku.hk needs all CSS files to be minified and compressed as it can save up to 194.3 kB or 91% of the original size.

Requests Breakdown

Number of requests can be reduced by 48 (55%)

Requests Now

87

After Optimization

39

The browser has sent 87 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tl HKU. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 34 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

tl.hku.hk accessibility score

87

Accessibility Issues

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

Buttons do not have an accessible name

High

Links do not have a discernible name

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.

Best Practices

tl.hku.hk 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

tl.hku.hk SEO score

90

Search Engine Optimization Advices

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tl.hku.hk can be misinterpreted by Google and other search engines. Our service has detected that English 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 Tl.hku.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 description is not detected on the main page of Tl HKU. 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: