Access cnblogs.com. 博客园 - 开发者的网上家园

name

value

score

weighting

FCP (First Contentful Paint)

Value5.8 s

4/100

10%

LCP (Largest Contentful Paint)

Value5.8 s

15/100

25%

SI (Speed Index)

Value8.5 s

18/100

10%

TBT (Total Blocking Time)

Value110 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value7.1 s

52/100

10%

cnblogs.com

562 ms

www.cnblogs.com

956 ms

aggsite-new.min.css

302 ms

jquery.js

1358 ms

aggsite-new.min.js

1314 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 49% of them (25 requests) were addressed to the original Cnblogs.com, 35% (18 requests) were made to Pic.cnblogs.com and 6% (3 requests) were made to Common.cnblogs.com. The less responsive or slowest element that took the longest time to load (1.9 sec) relates to the external source Img2023.cnblogs.com.

Content Size

263.3 kB

After Optimization

150.8 kB

In fact, the total size of Cnblogs.com main page is 263.3 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. 20% of websites need less resources to load. Images take 120.6 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 60.8 kB

Original 75.2 kB
After minification 57.0 kB
After compression 14.4 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 18.2 kB, which is 24% 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 60.8 kB or 81% of the original size.

Image Optimization

-27%

Potential reduce by 32.7 kB

Original 120.6 kB
After minification 87.9 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, Cnblogs needs image optimization as it can save up to 32.7 kB or 27% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-31%

Potential reduce by 18.6 kB

Original 60.6 kB
After minification 60.6 kB
After compression 41.9 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 18.6 kB or 31% of the original size.

CSS Optimization

-5%

Potential reduce by 320 B

Original 7.0 kB
After minification 7.0 kB
After compression 6.7 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. Cnblogs.com has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cnblogs. 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 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

Links do not have a discernible name

These are opportunities to improve keyboard navigation in your application.

High

Some elements have a [tabindex] value greater than 0

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

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

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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

High

Links are not crawlable

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 uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

ZH
Language Claimed

ZH
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cnblogs.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it matches the claimed language. Our system also found out that Cnblogs.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

cnblogs.com

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

博客园 - 开发者的网上家园

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

cnblogs.com

www.cnblogs.com

aggsite-new.min.css

jquery.js

aggsite-new.min.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

cnblogs.com

www.cnblogs.com

aggsite-new.min.css

jquery.js

aggsite-new.min.js

js

hm.js

aggsite-mobile-new.min.css

logo.svg

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20190315181946.png

vip.png

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20181204210217.png

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pulldown-light.svg

search.svg

newpost.svg

myblog.svg

message.svg

lite-mode-on.svg

avatar-default.svg

lite-mode-check.svg

pulldown-bold.svg

category.svg

picked.svg

candidate.svg

subscription.svg

following.svg