Access vifa-china.com. vifa音响

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value22.2 s

0/100

25%

SI (Speed Index)

Value17.9 s

0/100

10%

TBT (Total Blocking Time)

Value870 ms

33/100

30%

CLS (Cumulative Layout Shift)

Value0.415

23/100

15%

TTI (Time to Interactive)

Value17.1 s

4/100

10%

vifa-china.com

966 ms

vifa-china.com

1138 ms

30536_zh-cn.html.Head.js

1182 ms

30536_zh-cn.html.Body.js

2354 ms

pcstyle.css

270 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 7% of them (5 requests) were addressed to the original Vifa-china.com, 87% (59 requests) were made to Nwzimg.wezhan.cn and 1% (1 request) were made to Video.wezhan.cn. The less responsive or slowest element that took the longest time to load (3.7 sec) relates to the external source Download.wezhan.cn.

Content Size

2.8 MB

After Optimization

2.3 MB

In fact, the total size of Vifa-china.com main page is 2.8 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. 55% of websites need less resources to load. Images take 2.1 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 199.2 kB

Original 228.6 kB
After minification 203.0 kB
After compression 29.4 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 25.6 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 199.2 kB or 87% of the original size.

Image Optimization

-11%

Potential reduce by 237.4 kB

Original 2.1 MB
After minification 1.9 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. Obviously, Vifa China needs image optimization as it can save up to 237.4 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-17%

Potential reduce by 73.3 kB

Original 418.9 kB
After minification 400.6 kB
After compression 345.7 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 73.3 kB or 17% of the original size.

CSS Optimization

-23%

Potential reduce by 9.1 kB

Original 38.8 kB
After minification 34.2 kB
After compression 29.7 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. Vifa-china.com needs all CSS files to be minified and compressed as it can save up to 9.1 kB or 23% of the original size.

Requests Now

After Optimization

The browser has sent 60 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vifa China. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 11 to 1 for CSS 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

Links do not have a discernible name

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

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

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

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

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vifa-china.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 Vifa-china.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

vifa-china.com

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

vifa音响

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

vifa-china.com

vifa-china.com

30536_zh-cn.html.Head.js

30536_zh-cn.html.Body.js

pcstyle.css

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

vifa-china.com

vifa-china.com

30536_zh-cn.html.Head.js

30536_zh-cn.html.Body.js

pcstyle.css

reset.css

iconfont.css

iconfont.css

iconfont.css

pager.css

hover-effects.css

antChain.css

video-js.min.css

30536_Pc_zh-CN.css

jquery-3.6.3.min.js

jquery.lazyload.min.js

smart.animation.min.js

kino.razor.min.js

common.min.js

admin.validator.min.js

jquery.cookie.js

video.min.js

jssor.slider-22.2.16-all.min.js

slideshow.js

jquery.jqueryzoom.js

42526301.png

videodefault.png

polyfill.min.js

slicknav.css

jquery.slicknav.min.js

modernizr.min.js

ResponsiveJsLoader.js

42526286.png

43732271.png

43508368.jpg

43732272.png

43732269.png

43732268.png

43732270.png

43732267.png

43777150.png

43777010.png

43777149.png