Tools & Wizards About Us

Report Summary

  • 70

    Performance

    Renders faster than
    81% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 29% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

12306.gaotie.cn

12306火车票网上订票官网_【12306网上订火车票官网】_12306铁路客户服务中心_12306铁路订票官网_12306火车票订票官网

Page Load Speed

6.6 sec in total

First Response

1.1 sec

Resources Loaded

5.2 sec

Page Rendered

308 ms

About Website

Visit 12306.gaotie.cn now to see the best up-to-date 12306 Gaotie content for China and also check out these interesting facts you probably never knew about 12306.gaotie.cn

提供12306火车票网上订票官网相关订票问题指南，12306铁路客户服务中心网站（www.12306.cn），12306铁路网上订票官方网站、12306网上订火车票官网，可以查询列车时刻表、网上订火车票、高铁票、动车票，12306中国铁路客户服务中心，火车票余票查询， 12306铁路订票官网，火车网上订票就上12306网上订火车票官网。

Visit 12306.gaotie.cn

Key Findings

We analyzed 12306.gaotie.cn page load time and found that the first response time was 1.1 sec and then it took 5.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

12306.gaotie.cn performance score

70

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

22/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

48/100

25%

SI (Speed Index)

Value7.5 s

26/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.005

100/100

15%

TTI (Time to Interactive)

Value4.2 s

85/100

10%

Network Requests Diagram

12306.gaotie.cn

1109 ms

12306.gaotie.cn

1145 ms

header.css

1491 ms

footer.css

1500 ms

logo.gif

1329 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 5% of them (2 requests) were addressed to the original 12306.gaotie.cn, 83% (35 requests) were made to Images.gaotie.cn and 5% (2 requests) were made to Css.gaotie.cn. The less responsive or slowest element that took the longest time to load (2.6 sec) relates to the external source Images.gaotie.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 97.3 kB (26%)

Content Size

370.7 kB

After Optimization

273.4 kB

  • HTML
  • Images
  • CSS

In fact, the total size of 12306.gaotie.cn main page is 370.7 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. 20% of websites need less resources to load. Images take 290.0 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 63.0 kB

  • Original 75.4 kB
  • After minification 63.6 kB
  • After compression 12.4 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. This page needs HTML code to be minified as it can gain 11.8 kB, which is 16% 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 63.0 kB or 84% of the original size.

Image Optimization

-10%

Potential reduce by 30.2 kB

  • Original 290.0 kB
  • After minification 259.8 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 Gaotie images are well optimized though.

CSS Optimization

-78%

Potential reduce by 4.1 kB

  • Original 5.2 kB
  • After minification 3.4 kB
  • After compression 1.2 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.gaotie.cn needs all CSS files to be minified and compressed as it can save up to 4.1 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (41%)

Requests Now

39

After Optimization

23

  • Images
  • JavaScript
  • CSS

The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 12306 Gaotie. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

12306.gaotie.cn accessibility score

64

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.

Internationalization and localization

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

Impact

Issue

High

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

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

<input type="image"> elements do not have [alt] text

Best Practices

12306.gaotie.cn best practices score

50

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

12306.gaotie.cn SEO score

62

Search Engine Optimization Advices

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

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 12306.gaotie.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 12306.gaotie.cn main page’s claimed encoding is gb2312. 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 12306 Gaotie. 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: