Access jackjones.com.cn. JACK & JONES官方购物网站

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

13/100

10%

LCP (Largest Contentful Paint)

Value29.9 s

0/100

25%

SI (Speed Index)

Value12.4 s

3/100

10%

TBT (Total Blocking Time)

Value410 ms

67/100

30%

CLS (Cumulative Layout Shift)

Value1.023

2/100

15%

TTI (Time to Interactive)

Value17.0 s

4/100

10%

jackjones.com.cn

1018 ms

www.jackjones.com.cn

1712 ms

base.css

491 ms

style.css

1992 ms

dingyue.css

956 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 50% of them (30 requests) were addressed to the original Jackjones.com.cn, 37% (22 requests) were made to Cdnimage1.jackjones.com.cn and 5% (3 requests) were made to Libs.cn.coremetrics.com. The less responsive or slowest element that took the longest time to load (15.7 sec) relates to the external source Data.cn.coremetrics.com.

Content Size

608.9 kB

After Optimization

480.6 kB

In fact, the total size of Jackjones.com.cn main page is 608.9 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. 20% of websites need less resources to load. Images take 456.3 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 39.3 kB

Original 49.2 kB
After minification 40.6 kB
After compression 9.9 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 8.6 kB, which is 17% 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 39.3 kB or 80% of the original size.

Image Optimization

-2%

Potential reduce by 10.2 kB

Original 456.3 kB
After minification 446.1 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. JACK Jones images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 23.2 kB

Original 33.8 kB
After minification 26.5 kB
After compression 10.6 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 23.2 kB or 69% of the original size.

CSS Optimization

-80%

Potential reduce by 55.6 kB

Original 69.6 kB
After minification 62.0 kB
After compression 14.0 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. Jackjones.com.cn needs all CSS files to be minified and compressed as it can save up to 55.6 kB or 80% of the original size.

Requests Now

After Optimization

The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of JACK Jones. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts 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 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

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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

ZH
Encoding

ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jackjones.com.cn can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed Chinese language. Our system also found out that Jackjones.com.cn main page’s claimed encoding is iso-8859-1. 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

jackjones.com.cn

Open Graph description is not detected on the main page of JACK Jones. 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

JACK & JONES官方购物网站

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

jackjones.com.cn

www.jackjones.com.cn

base.css

style.css

dingyue.css

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

jackjones.com.cn

www.jackjones.com.cn

base.css

style.css

dingyue.css

jquery-1.7.2.min.js

jquery.lazyload.min.js

lazyload.js

HomePage.js

lrscroll_HomePage.js

dingyue.js

MiniShopCart.js

Header.js

divImitateSelect.js

Department.js

eluminate.js

suspensionFix.js

96599f91-79f0-4583-aa6e-c556aaef624e.jpg

erweima.jpg

e1848738-34cb-4cf9-ae04-d54f7503e7ad.jpg

d5dac9c8-0fb2-47ca-9fc8-88fde1d8c4d1.jpg

e9567754-1518-4b3e-bb0a-4b662b0b4ec2.jpg

b40286a3-d957-4d59-8cc1-8b354b7b0a3c.jpg

72c7137b-b9df-4979-8184-5fd6556c4673.jpg

logo.jpg

load.gif

deswe45.jpg

90398186.js

msg_bg.png

collectIcon.jpg

navLicon.png

menCenIcon.jpg

sinaIconColor.jpg

weixinIcon.jpg

h.js

dispatcher-v3.js

mt.png

hm.gif

fixIndexIocn.jpg

fixIcon1.jpg

fixIcon2.jpg

fixIcon4.jpg

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