Report Summary

  • 43

    Performance

    Renders faster than
    62% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

buy.tmall.com

淘宝网 - 淘!我喜欢

Page Load Speed

18.8 sec in total

First Response

1.7 sec

Resources Loaded

17 sec

Page Rendered

96 ms

buy.tmall.com screenshot

About Website

Welcome to buy.tmall.com homepage info - get ready to check Buy Tmall best content for China right away, or after learning these important things about buy.tmall.com

淘宝网 - 亚洲较大的网上交易平台,提供各类服饰、美容、家居、数码、话费/点卡充值… 数亿优质商品,同时提供担保交易(先收货后付款)等安全交易保障服务,并由商家提供退货承诺、破损补寄等消费者保障服务,让你安心享受网上购物乐趣!

Visit buy.tmall.com

Key Findings

We analyzed Buy.tmall.com page load time and found that the first response time was 1.7 sec and then it took 17.1 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

buy.tmall.com performance score

43

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value7.0 s

6/100

25%

SI (Speed Index)

Value8.9 s

15/100

10%

TBT (Total Blocking Time)

Value390 ms

69/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value9.1 s

32/100

10%

Network Requests Diagram

buy.tmall.com

1712 ms

buy.tmall.com

3917 ms

error1.html

2154 ms

seed-min.js

281 ms

global-min.css

297 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 5% of them (2 requests) were addressed to the original Buy.tmall.com, 65% (28 requests) were made to G.alicdn.com and 7% (3 requests) were made to Assets.alicdn.com. The less responsive or slowest element that took the longest time to load (7.3 sec) relates to the external source Tns.simba.taobao.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 312.6 kB (61%)

Content Size

510.7 kB

After Optimization

198.1 kB

In fact, the total size of Buy.tmall.com main page is 510.7 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. 30% of websites need less resources to load. Javascripts take 313.6 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 67.9 kB

  • Original 81.3 kB
  • After minification 79.3 kB
  • After compression 13.4 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 67.9 kB or 84% of the original size.

Image Optimization

-19%

Potential reduce by 14.8 kB

  • Original 76.1 kB
  • After minification 61.3 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, Buy Tmall needs image optimization as it can save up to 14.8 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-63%

Potential reduce by 198.2 kB

  • Original 313.6 kB
  • After minification 313.1 kB
  • After compression 115.4 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 198.2 kB or 63% of the original size.

CSS Optimization

-80%

Potential reduce by 31.7 kB

  • Original 39.7 kB
  • After minification 37.6 kB
  • After compression 8.0 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. Buy.tmall.com needs all CSS files to be minified and compressed as it can save up to 31.7 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (74%)

Requests Now

38

After Optimization

10

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Buy Tmall. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

buy.tmall.com accessibility score

74

Accessibility Issues

ARIA

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.

Impact

Issue

High

[role] values are not valid

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

Names and labels

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.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

buy.tmall.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

buy.tmall.com SEO score

54

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

High

Page is blocked from indexing

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    GBK

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Buy.tmall.com 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 Buy.tmall.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

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