Access cenmade.en.alibaba.com. Shanghai Cenmade Laser Technology Co., Ltd.

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

70/100

10%

LCP (Largest Contentful Paint)

Value17.6 s

0/100

25%

SI (Speed Index)

Value11.1 s

6/100

10%

TBT (Total Blocking Time)

Value4,760 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.403

25/100

15%

TTI (Time to Interactive)

Value26.5 s

0/100

10%

cenmade.en.alibaba.com

282 ms

cenmade.en.alibaba.com

691 ms

40 ms

header.css

99 ms

Our browser made a total of 104 requests to load all elements on the main page. We found that 2% of them (2 requests) were addressed to the original Cenmade.en.alibaba.com, 43% (45 requests) were made to S.alicdn.com and 17% (18 requests) were made to Sc04.alicdn.com. The less responsive or slowest element that took the longest time to load (1.2 sec) relates to the external source Sc04.alicdn.com.

Content Size

7.6 MB

After Optimization

3.4 MB

In fact, the total size of Cenmade.en.alibaba.com main page is 7.6 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 5.3 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 485.4 kB

Original 592.3 kB
After minification 588.3 kB
After compression 106.8 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. 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 485.4 kB or 82% of the original size.

Image Optimization

-16%

Potential reduce by 212.5 kB

Original 1.3 MB
After minification 1.1 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. Obviously, Cenmade En Alibaba needs image optimization as it can save up to 212.5 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-61%

Potential reduce by 3.2 MB

Original 5.3 MB
After minification 5.3 MB
After compression 2.1 MB

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 3.2 MB or 61% of the original size.

CSS Optimization

-72%

Potential reduce by 296.3 kB

Original 408.7 kB
After minification 357.8 kB
After compression 112.4 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. Cenmade.en.alibaba.com needs all CSS files to be minified and compressed as it can save up to 296.3 kB or 72% of the original size.

Requests Now

After Optimization

The browser has sent 93 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cenmade En Alibaba. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 30 to 1 for JavaScripts and from 10 to 1 for CSS 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

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

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 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.

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

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

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

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 doesn't have a valid hreflang

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

Language and Encoding

Language Detected

EN
Language Claimed

EN
Encoding

UTF-8

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

Open Graph data is detected on the main page of Cenmade En Alibaba. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: