Tools & Wizards About Us
lib.polyu.edu.hk screenshot

Report Summary

  • 27

    Performance

    Renders faster than
    47% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 84

    SEO

    Google-friendlier than
    53% of websites

lib.polyu.edu.hk

Main Page | Pao Yue-kong Library, The Hong Kong Polytechnic University

Page Load Speed

8.7 sec in total

First Response

795 ms

Resources Loaded

6.7 sec

Page Rendered

1.2 sec

lib.polyu.edu.hk screenshot

About Website

Welcome to lib.polyu.edu.hk homepage info - get ready to check Lib Polyu best content for China right away, or after learning these important things about lib.polyu.edu.hk

The Library actively supports the University’s mission by providing integrated and timely access to high quality scholarly resources, an inspiring environment for intellectual growth and discovery, wi...

Visit lib.polyu.edu.hk

Key Findings

We analyzed Lib.polyu.edu.hk page load time and found that the first response time was 795 ms and then it took 7.9 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

lib.polyu.edu.hk performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.2 s

1/100

10%

LCP (Largest Contentful Paint)

Value12.6 s

0/100

25%

SI (Speed Index)

Value10.8 s

6/100

10%

TBT (Total Blocking Time)

Value590 ms

51/100

30%

CLS (Cumulative Layout Shift)

Value0.219

57/100

15%

TTI (Time to Interactive)

Value10.2 s

25/100

10%

Network Requests Diagram

lib.polyu.edu.hk

795 ms

www.lib.polyu.edu.hk

1236 ms

css_ywqYrtSodM0qVMzAkOSnqZ_iBnAVpkSeD_yPtUN9tBk.css

376 ms

css_n2K-Su2W-Byywbl2LbDy8gJafH6_yNQ9UY-BLcsy94w.css

563 ms

css_PGbJgHCUCBf4dg7K9Kt8aAwsApndP4GZ9RuToPy3-Fk.css

565 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 85% of them (29 requests) were addressed to the original Lib.polyu.edu.hk, 6% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Lib.polyu.edu.hk.

Page Optimization Overview & Recommendations

Page size can be reduced by 190.9 kB (29%)

Content Size

664.3 kB

After Optimization

473.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lib.polyu.edu.hk main page is 664.3 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 448.2 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 128.0 kB

  • Original 146.4 kB
  • After minification 114.5 kB
  • After compression 18.4 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 31.9 kB, which is 22% 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 128.0 kB or 87% of the original size.

Image Optimization

-12%

Potential reduce by 53.9 kB

  • Original 448.2 kB
  • After minification 394.3 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, Lib Polyu needs image optimization as it can save up to 53.9 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-13%

Potential reduce by 8.9 kB

  • Original 66.5 kB
  • After minification 65.9 kB
  • After compression 57.6 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 8.9 kB or 13% of the original size.

CSS Optimization

-2%

Potential reduce by 77 B

  • Original 3.2 kB
  • After minification 3.2 kB
  • After compression 3.1 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. Lib.polyu.edu.hk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 10 (40%)

Requests Now

25

After Optimization

15

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lib Polyu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

lib.polyu.edu.hk

lib.polyu.edu.hk

795 ms

www.lib.polyu.edu.hk

www.lib.polyu.edu.hk

1236 ms

css_ywqYrtSodM0qVMzAkOSnqZ_iBnAVpkSeD_yPtUN9tBk.css

css_ywqYrtSodM0qVMzAkOSnqZ_iBnAVpkSeD_yPtUN9tBk.css

376 ms

css_n2K-Su2W-Byywbl2LbDy8gJafH6_yNQ9UY-BLcsy94w.css

css_n2K-Su2W-Byywbl2LbDy8gJafH6_yNQ9UY-BLcsy94w.css

563 ms

css_PGbJgHCUCBf4dg7K9Kt8aAwsApndP4GZ9RuToPy3-Fk.css

css_PGbJgHCUCBf4dg7K9Kt8aAwsApndP4GZ9RuToPy3-Fk.css

565 ms

css_lMiCPJWzB4PKfA0CwM9r1Z4K0u5VzmZgnga8LJ-iKqU.css

css_lMiCPJWzB4PKfA0CwM9r1Z4K0u5VzmZgnga8LJ-iKqU.css

1510 ms

jquery.min.js

jquery.min.js

53 ms

jquery-migrate-3.0.0.min.js

jquery-migrate-3.0.0.min.js

61 ms

js_GOikDsJOX04Aww72M-XK1hkq4qiL_1XgGsRdkL0XlDo.js

js_GOikDsJOX04Aww72M-XK1hkq4qiL_1XgGsRdkL0XlDo.js

581 ms

js_R85izztB3t4WOXgZ1N74Uv_5W_jQszgv_MCQZItrXKo.js

js_R85izztB3t4WOXgZ1N74Uv_5W_jQszgv_MCQZItrXKo.js

2020 ms

bc21f36b74.js

bc21f36b74.js

93 ms

jquery.responsiveTabs.min.js

jquery.responsiveTabs.min.js

396 ms

index.js

index.js

563 ms

analytics.js

analytics.js

357 ms

logo_library_1x.png

logo_library_1x.png

760 ms

fact-85-logo-1x.png

fact-85-logo-1x.png

469 ms

202105homepage_bg_updated.jpg

202105homepage_bg_updated.jpg

1619 ms

bg_tabs-panel.png

bg_tabs-panel.png

390 ms

img_one-search_85.png

img_one-search_85.png

381 ms

sprite_home-icon.png

sprite_home-icon.png

378 ms

sprite_home-icon.png

sprite_home-icon.png

567 ms

bg_home-row-top85.png

bg_home-row-top85.png

756 ms

bg-ft-top.png

bg-ft-top.png

578 ms

bg-ft-top-notch.png

bg-ft-top-notch.png

656 ms

btn-giving-no-border.png

btn-giving-no-border.png

753 ms

tagline-1x.png

tagline-1x.png

765 ms

sticky_menu_page_curl_v2.png

sticky_menu_page_curl_v2.png

845 ms

roboto-regular.woff

roboto-regular.woff

746 ms

roboto-light.woff

roboto-light.woff

1416 ms

roboto-thin.woff

roboto-thin.woff

1416 ms

roboto-medium.woff

roboto-medium.woff

1417 ms

roboto-bold.woff

roboto-bold.woff

1418 ms

wico.ttf

wico.ttf

1417 ms

collect

collect

13 ms

Accessibility Review

lib.polyu.edu.hk accessibility score

92

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

lib.polyu.edu.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

Missing source maps for large first-party JavaScript

SEO Factors

lib.polyu.edu.hk SEO score

84

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

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 Lib.polyu.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 Lib.polyu.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

lib.polyu.edu.hk

Open Graph data is detected on the main page of Lib Polyu. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: