Tools & Wizards About Us
12306.liebao.cn screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 57% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 46

    SEO

    Google-friendlier than
    18% of websites

12306.liebao.cn

Page Load Speed

44.4 sec in total

First Response

12.3 sec

Resources Loaded

31.8 sec

Page Rendered

245 ms

12306.liebao.cn screenshot

About Website

Click here to check amazing 12306 Liebao content for China. Otherwise, check out these important facts you probably never knew about 12306.liebao.cn

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Visit 12306.liebao.cn

Key Findings

We analyzed 12306.liebao.cn page load time and found that the first response time was 12.3 sec and then it took 32.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

12306.liebao.cn performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value32.3 s

0/100

25%

SI (Speed Index)

Value15.8 s

0/100

10%

TBT (Total Blocking Time)

Value460 ms

62/100

30%

CLS (Cumulative Layout Shift)

Value0.162

72/100

15%

TTI (Time to Interactive)

Value28.6 s

0/100

10%

Network Requests Diagram

12306.liebao.cn

12305 ms

index.css

1946 ms

logo.new.png

5626 ms

page-bg.png

346 ms

icon.png

1069 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that all of those requests were addressed to 12306.liebao.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (19.5 sec) belongs to the original domain 12306.liebao.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 98.4 kB (59%)

Content Size

166.9 kB

After Optimization

68.4 kB

  • HTML
  • Images
  • CSS

In fact, the total size of 12306.liebao.cn main page is 166.9 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. Only 5% of websites need less resources to load. CSS take 92.8 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 26.1 kB

  • Original 37.3 kB
  • After minification 37.3 kB
  • After compression 11.1 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 26.1 kB or 70% of the original size.

Image Optimization

-4%

Potential reduce by 1.3 kB

  • Original 36.8 kB
  • After minification 35.5 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. 12306 Liebao images are well optimized though.

CSS Optimization

-77%

Potential reduce by 71.0 kB

  • Original 92.8 kB
  • After minification 92.1 kB
  • After compression 21.8 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. 12306.liebao.cn needs all CSS files to be minified and compressed as it can save up to 71.0 kB or 77% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

7

After Optimization

7

  • AJAX
  • Images
  • CSS

The browser has sent 7 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 12306 Liebao. According to our analytics all requests are already optimized.

Network Requests Diagram

12306.liebao.cn

12306.liebao.cn

12305 ms

index.css

index.css

1946 ms

logo.new.png

logo.new.png

5626 ms

page-bg.png

page-bg.png

346 ms

icon.png

icon.png

1069 ms

css-sprite.png

css-sprite.png

6033 ms

lib.js

lib.js

19527 ms

wxqr.png

wxqr.png

1173 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

14369 ms

Accessibility Review

12306.liebao.cn accessibility score

84

Accessibility Issues

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

High

Some elements have a [tabindex] value greater than 0

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

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

Best Practices

12306.liebao.cn best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

12306.liebao.cn SEO score

46

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

robots.txt is not valid

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

    N/A

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 12306.liebao.cn 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) and no language is claimed in <html> or <meta> tags either. Our system also found out that 12306.liebao.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

12306.liebao.cn

Open Graph description is not detected on the main page of 12306 Liebao. 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: