Access levi.com.cn. Levi's中国官方网站

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

10/100

10%

LCP (Largest Contentful Paint)

Value13.6 s

0/100

25%

SI (Speed Index)

Value74.2 s

0/100

10%

TBT (Total Blocking Time)

Value3,210 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value1.368

0/100

15%

TTI (Time to Interactive)

Value121.9 s

0/100

10%

levi.com.cn

3964 ms

base.css

791 ms

page.css

6541 ms

jquery.js

2545 ms

jq.snow.js

381 ms

Our browser made a total of 97 requests to load all elements on the main page. We found that 52% of them (50 requests) were addressed to the original Levi.com.cn, 41% (40 requests) were made to Pimage.levi.com.cn and 2% (2 requests) were made to Trace.zhiziyun.com. The less responsive or slowest element that took the longest time to load (20.3 sec) relates to the external source Pimage.levi.com.cn.

Content Size

593.8 kB

After Optimization

184.2 kB

In fact, the total size of Levi.com.cn main page is 593.8 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. Javascripts take 221.6 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 133.0 kB

Original 164.9 kB
After minification 141.8 kB
After compression 31.9 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 23.1 kB, which is 14% 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 133.0 kB or 81% of the original size.

Image Optimization

-5%

Potential reduce by 3.6 kB

Original 74.3 kB
After minification 70.7 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. Levi images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 154.5 kB

Original 221.6 kB
After minification 199.1 kB
After compression 67.2 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 154.5 kB or 70% of the original size.

CSS Optimization

-89%

Potential reduce by 118.5 kB

Original 133.0 kB
After minification 78.8 kB
After compression 14.5 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. Levi.com.cn needs all CSS files to be minified and compressed as it can save up to 118.5 kB or 89% of the original size.

Requests Now

After Optimization

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Levi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 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 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 are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

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

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

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

ZH
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Levi.com.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 Levi.com.cn 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

levi.com.cn

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

Levi's中国官方网站

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

levi.com.cn

base.css

page.css

jquery.js

jq.snow.js

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

levi.com.cn

base.css

page.css

jquery.js

jq.snow.js

swiper.min.css

swiper.min.js

main.js

v218.js

loading.js

jquery.jcarousel.min.js

jquery.bannerSwitch.js

account.js

gs.js

f702512c-5a0e-45b8-a82c-d2aa18cc81f0.jpg

logo1.png

jr1.jpg

jr2.jpg

bg2.png

dl_gg.jpg

GetValidateCode

zh.png

gwc.png

sl.png

ss.png

l218_8.jpg

db_logo.jpg

db_bt1.png

wb.png

wx.png

weima2.jpg

db_bt2.png

db_dh.jpg

27a5b339-7c1e-4525-bbd5-c5e9efdd07cf.jpg

13d3cf6a-363d-4ffd-b6d9-6e164cd25ce5.jpg

0f162bce-d6c3-469b-adc9-510ba296c6cc.jpg

04e281b5-01a4-4031-ba8b-6323af3bdff5.jpg

2be849fb-4546-49a0-9e3f-26631eeb8b42.jpg

3b3fe998-3a9a-43ed-a0e8-4f9803e09658.jpg

291dbcd2-cd7b-457c-974a-612a577882ed.jpg

2b856341-ae06-410e-8d9f-2f628670850d.jpg

5bab8dd9-bc99-4212-8863-fce916953f2e.jpg

f9554db1-ec52-477b-8f85-bbbe3cbfe397.jpg