Access c315.cn. 中检协质量诚信验证系统

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

85/100

10%

LCP (Largest Contentful Paint)

Value28.1 s

0/100

25%

SI (Speed Index)

Value7.9 s

23/100

10%

TBT (Total Blocking Time)

Value1,430 ms

15/100

30%

CLS (Cumulative Layout Shift)

Value0.265

46/100

15%

TTI (Time to Interactive)

Value12.2 s

15/100

10%

c315.cn

19953 ms

c315.css

15363 ms

search.js

6171 ms

caqihd.js

3744 ms

caqitpsm.js

4151 ms

Our browser made a total of 133 requests to load all elements on the main page. We found that 95% of them (127 requests) were addressed to the original C315.cn, 3% (4 requests) were made to Chinatt315.org.cn and 2% (2 requests) were made to Count27.51yes.com. The less responsive or slowest element that took the longest time to load (20.5 sec) belongs to the original domain C315.cn.

Content Size

826.3 kB

After Optimization

696.6 kB

In fact, the total size of C315.cn main page is 826.3 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. 35% of websites need less resources to load. Images take 649.4 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 57.8 kB

Original 72.5 kB
After minification 64.7 kB
After compression 14.8 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 7.8 kB, which is 11% 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 57.8 kB or 80% of the original size.

Image Optimization

-1%

Potential reduce by 4.1 kB

Original 649.4 kB
After minification 645.4 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. C 315 images are well optimized though.

JavaScript Optimization

-64%

Potential reduce by 62.2 kB

Original 96.6 kB
After minification 96.3 kB
After compression 34.4 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 62.2 kB or 64% of the original size.

CSS Optimization

-74%

Potential reduce by 5.8 kB

Original 7.8 kB
After minification 7.0 kB
After compression 2.0 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. C315.cn needs all CSS files to be minified and compressed as it can save up to 5.8 kB or 74% of the original size.

Requests Now

105

After Optimization

102

The browser has sent 105 CSS, Javascripts, AJAX and image requests in order to completely render the main page of C 315. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 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 interpretation of your content by users in different locales.

High

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

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

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

High

Form elements do not have associated labels

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>).

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

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

Search Engine Optimization Advices

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

High

Links are not crawlable

High

robots.txt is not valid

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

High

Image elements do not have [alt] attributes

High

Document uses plugins

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 C315.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 C315.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

c315.cn

Open Graph description is not detected on the main page of C 315. 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

中检协质量诚信验证系统

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

c315.cn

c315.css

search.js

caqihd.js

caqitpsm.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

c315.cn

c315.css

search.js

caqihd.js

caqitpsm.js

tici.htm

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