Access jd.com. JD.com, Inc.

name

value

score

weighting

FCP (First Contentful Paint)

Value6.2 s

3/100

10%

LCP (Largest Contentful Paint)

Value9.4 s

1/100

25%

SI (Speed Index)

Value12.5 s

3/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.2 s

51/100

10%

jd.com

1308 ms

www.jd.com

900 ms

jd2015img.png

750 ms

56f4e6b8N940f608c.png

83 ms

5707bf81N82331e7b.jpg

1015 ms

Our browser made a total of 100 requests to load all elements on the main page. We found that 2% of them (2 requests) were addressed to the original Jd.com, 21% (21 requests) were made to Img12.360buyimg.com and 19% (19 requests) were made to Misc.360buyimg.com. The less responsive or slowest element that took the longest time to load (3.5 sec) relates to the external source D.3.cn.

Content Size

2.1 MB

After Optimization

1.6 MB

In fact, the total size of Jd.com main page is 2.1 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. 55% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 188.2 kB

Original 243.7 kB
After minification 233.3 kB
After compression 55.5 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 188.2 kB or 77% of the original size.

Image Optimization

-6%

Potential reduce by 83.7 kB

Original 1.5 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. JD images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 240.5 kB

Original 353.2 kB
After minification 345.6 kB
After compression 112.7 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 240.5 kB or 68% of the original size.

CSS Optimization

-81%

Potential reduce by 8.7 kB

Original 10.8 kB
After minification 10.7 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. Jd.com needs all CSS files to be minified and compressed as it can save up to 8.7 kB or 81% of the original size.

Requests Now

After Optimization

The browser has sent 97 CSS, Javascripts, AJAX and image requests in order to completely render the main page of JD. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

High

[aria-*] attributes do not match their roles

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These items highlight common accessibility best practices.

High

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

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

EN
Language Claimed

N/A
Encoding

GBK

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jd.com 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 Jd.com main page’s claimed encoding is gbk. 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

jd.com

Open Graph description is not detected on the main page of JD. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

JD.com, Inc.

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

jd.com

www.jd.com

jd2015img.png

56f4e6b8N940f608c.png

5707bf81N82331e7b.jpg

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

jd.com

www.jd.com

jd2015img.png

56f4e6b8N940f608c.png

5707bf81N82331e7b.jpg

misc.360buyimg.com

init.js

wl.js

cookie_check

55fa82feN72ffadc6.png

55fa838bNd53c791c.png

logo-201305.png

loading.gif

misc.360buyimg.com

log.gif

main.js

insertStyles.js

focus

blank.gif

57067372Ndcdee854.jpg

hotWords.php

helloService.ashx

todays.js

guess-like.js

special-buy-v4.js

banner.js

index-1-floor1-floor_index.js

common.css

diviner

loading.gif

homebg.png

price.js

57069931N9a652df0.jpg

57077871N38dab416.jpg

57077a22N482b73b4.jpg

57015e33N4b44a302.jpg

toolbar.png

loading.gif

5703e6a1N6f9449a6.jpg

56fba0f3Nc3db1a17.jpg

56e8f995N517fa0fa.jpg

56e23586Nb9a1fd16.jpg

56fba0d6Nc038a475.jpg