Access ch.com. 飞机票查询_国内国际打折特价机票预订||春秋航空官网

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

26/100

10%

LCP (Largest Contentful Paint)

Value4.9 s

29/100

25%

SI (Speed Index)

Value12.5 s

3/100

10%

TBT (Total Blocking Time)

Value2,210 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.119

85/100

15%

TTI (Time to Interactive)

Value18.1 s

3/100

10%

www.ch.com

7105 ms

g-base.css

5225 ms

c-home.css

5229 ms

sea-master.js

1975 ms

s_code.js

20 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 3% of them (2 requests) were addressed to the original Ch.com, 37% (25 requests) were made to Media.china-sss.com and 26% (18 requests) were made to Ajax.china-sss.com. The less responsive or slowest element that took the longest time to load (7.1 sec) belongs to the original domain Ch.com.

Content Size

964.9 kB

After Optimization

441.6 kB

In fact, the total size of Ch.com main page is 964.9 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. 50% of websites need less resources to load. Javascripts take 464.1 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 84.8 kB

Original 101.2 kB
After minification 83.3 kB
After compression 16.4 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 17.8 kB, which is 18% 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 84.8 kB or 84% of the original size.

Image Optimization

-8%

Potential reduce by 28.6 kB

Original 346.7 kB
After minification 318.1 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. Ch images are well optimized though.

JavaScript Optimization

-79%

Potential reduce by 367.4 kB

Original 464.1 kB
After minification 436.6 kB
After compression 96.7 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 367.4 kB or 79% of the original size.

CSS Optimization

-80%

Potential reduce by 42.6 kB

Original 53.0 kB
After minification 47.5 kB
After compression 10.4 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. Ch.com needs all CSS files to be minified and compressed as it can save up to 42.6 kB or 80% of the original size.

Requests Now

After Optimization

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ch. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 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

Form elements do not have associated labels

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 doesn't use 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 Ch.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 Ch.com 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

ch.com

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

飞机票查询_国内国际打折特价机票预订||春秋航空官网

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

www.ch.com

g-base.css

c-home.css

sea-master.js

s_code.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

www.ch.com

g-base.css

c-home.css

sea-master.js

s_code.js

g-base.png

chlogo-cn.png

topbar-20150401-620x68.png

product-201501091733-316x197.gif

b_wxl.gif

i-pcidss.png

b_ICP.gif

b_credible.gif

b_110.gif

gs_icon.gif

ghs.png

fn-head.js

chlogo-cn.png

loading-2.gif

slides-prev.png

slides-next.png

c-home.png

jquery-1.7.2.min.js

main-home.js

analytics.js

gtm.js

ui-slides.js

fn-searchform.js

underscore-min.js

view.js

collect

collect

conversion_async.js

collect

collect

ui-selection.js

ui-datepicker.js

ui-citytip.js

ui-placeholder.js

GetFlashes

collect

citydict-zh-cn.js

flydate.js