Access lib.polyu.edu.hk. Main Page | Pao Yue-kong Library, The Hong Kong Polytechnic University

lib.polyu.edu.hk

683 ms

www.lib.polyu.edu.hk

1376 ms

css_ywqYrtSodM0qVMzAkOSnqZ_iBnAVpkSeD_yPtUN9tBk.css

441 ms

css_n2K-Su2W-Byywbl2LbDy8gJafH6_yNQ9UY-BLcsy94w.css

681 ms

css_PGbJgHCUCBf4dg7K9Kt8aAwsApndP4GZ9RuToPy3-Fk.css

670 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 76% of them (29 requests) were addressed to the original Lib.polyu.edu.hk, 5% (2 requests) were made to Vjs.zencdn.net and 5% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Lib.polyu.edu.hk.

Content Size

1.1 MB

After Optimization

868.0 kB

In fact, the total size of Lib.polyu.edu.hk main page is 1.1 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. 30% of websites need less resources to load. Javascripts take 450.2 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 132.2 kB

Original 151.1 kB
After minification 117.4 kB
After compression 18.9 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 33.7 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 132.2 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

-2%

Potential reduce by 8.9 kB

Original 450.2 kB
After minification 449.6 kB
After compression 441.3 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

-4%

Potential reduce by 494 B

Original 14.0 kB
After minification 14.0 kB
After compression 13.5 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 Now

After Optimization

The browser has sent 29 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 11 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.