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alvn.cn screenshot

74

Performance

Renders faster than
83% of other websites
65

Accessibility

Visual factors better than
that of 30% of websites
58

Best Practices

More advanced features
available than in
20% of websites
67

SEO

Google-friendlier than
26% of websites

First Response

2.2 sec

Resources Loaded

5.3 sec

Page Rendered

349 ms

alvn.cn screenshot

About Website

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

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Visit alvn.cn

Key Findings

We analyzed Alvn.cn page load time and found that the first response time was 2.2 sec and then it took 5.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

90/100

10%

LCP (Largest Contentful Paint)

Value5.9 s

14/100

25%

SI (Speed Index)

Value4.7 s

69/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.034

100/100

15%

TTI (Time to Interactive)

Value3.1 s

95/100

10%

alvn.cn

2248 ms

page.css

292 ms

ScrollPic.js

293 ms

photopic_roll.js

294 ms

simplefoucs.js

148 ms

Our browser made a total of 79 requests to load all elements on the main page. We found that all of those requests were addressed to Alvn.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Alvn.cn.

Content Size

6.4 MB

After Optimization

6.1 MB

In fact, the total size of Alvn.cn main page is 6.4 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 65% of websites need less resources to load. Images take 6.2 MB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 64.6 kB

Original 71.2 kB
After minification 69.8 kB
After compression 6.6 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 64.6 kB or 91% of the original size.

Image Optimization

-3%

Potential reduce by 176.7 kB

Original 6.2 MB
After minification 6.1 MB

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. Alvn images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 72.2 kB

Original 109.6 kB
After minification 108.4 kB
After compression 37.3 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 72.2 kB or 66% of the original size.

CSS Optimization

-78%

Potential reduce by 7.4 kB

Original 9.4 kB
After minification 8.6 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. Alvn.cn needs all CSS files to be minified and compressed as it can save up to 7.4 kB or 78% of the original size.

Requests Now

78

After Optimization

68

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Alvn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

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 the experience of reading tabular or list data using assistive technology, like a screen reader.

High

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

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

Image elements do not have [alt] attributes

Language and Encoding

Language Detected

ZH
Language Claimed

EN
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Alvn.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed English language. Our system also found out that Alvn.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

alvn.cn

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