Access jdu.com.

Report Summary

name

value

score

weighting

FCP (First Contentful Paint)

Value6.5 s

2/100

10%

LCP (Largest Contentful Paint)

Value6.7 s

8/100

25%

SI (Speed Index)

Value6.5 s

39/100

10%

TBT (Total Blocking Time)

Value260 ms

83/100

30%

CLS (Cumulative Layout Shift)

Value0.053

98/100

15%

TTI (Time to Interactive)

Value9.3 s

32/100

10%

jdu.com

305 ms

www.jdu.com

496 ms

bootstrap.min.css

48 ms

fontawesome.css

56 ms

18-sherpa.css

88 ms

Our browser made a total of 22 requests to load all elements on the main page. We found that 45% of them (10 requests) were addressed to the original Jdu.com, 14% (3 requests) were made to Cdnjs.cloudflare.com and 9% (2 requests) were made to Cdn.jsdelivr.net. The less responsive or slowest element that took the longest time to load (496 ms) belongs to the original domain Jdu.com.

Content Size

33.0 kB

After Optimization

15.6 kB

In fact, the total size of Jdu.com main page is 33.0 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. 25% of websites need less resources to load. HTML takes 16.5 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 12.2 kB

Original 16.5 kB
After minification 13.9 kB
After compression 4.3 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 2.6 kB, which is 16% 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 12.2 kB or 74% of the original size.

JavaScript Optimization

-32%

Potential reduce by 4.3 kB

Original 13.6 kB
After minification 13.6 kB
After compression 9.3 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 4.3 kB or 32% of the original size.

CSS Optimization

-25%

Potential reduce by 726 B

Original 2.9 kB
After minification 2.8 kB
After compression 2.1 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. Jdu.com needs all CSS files to be minified and compressed as it can save up to 726 B or 25% of the original size.

Requests Now

After Optimization

The browser has sent 17 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jdu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

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/).

High

Document uses legible font sizes

Language and Encoding

Language Detected

N/A
Language Claimed

EN
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jdu.com can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that Jdu.com 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 Jdu. 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: