Tools & Wizards About Us

Report Summary

  • 57

    Performance

    Renders faster than
    73% of other websites

  • 40

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

coomaer.com

Multimedia Speaker , bluetooth speaker manufacture - Huizhou Coomaer Technology Co., Limited

Page Load Speed

10.5 sec in total

First Response

2 sec

Resources Loaded

8.1 sec

Page Rendered

436 ms

About Website

Click here to check amazing Coomaer content. Otherwise, check out these important facts you probably never knew about coomaer.com

Huizhou Coomaer Technology Co., Ltd is one of the leading production plants in Zhongkai high-tech zone,Huizhou city,Guangdong,China.Our site covers 20,000 square meters,which are enquipped with SMT,mo...

Visit coomaer.com

Key Findings

We analyzed Coomaer.com page load time and found that the first response time was 2 sec and then it took 8.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

coomaer.com performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

54/100

10%

LCP (Largest Contentful Paint)

Value10.7 s

0/100

25%

SI (Speed Index)

Value11.0 s

6/100

10%

TBT (Total Blocking Time)

Value130 ms

96/100

30%

CLS (Cumulative Layout Shift)

Value0.026

100/100

15%

TTI (Time to Interactive)

Value5.1 s

76/100

10%

Network Requests Diagram

coomaer.com

1985 ms

amazeui.min.css

1352 ms

app.css

1078 ms

jquery.min.js

1226 ms

amazeui.min.js

1413 ms

Our browser made a total of 103 requests to load all elements on the main page. We found that 53% of them (55 requests) were addressed to the original Coomaer.com, 31% (32 requests) were made to Coomaer-x-com.img.addlink.cn and 15% (15 requests) were made to Www-x-coomaer-x-com.img.addlink.cn. The less responsive or slowest element that took the longest time to load (3.3 sec) relates to the external source Coomaer-x-com.img.addlink.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 382.9 kB (8%)

Content Size

4.8 MB

After Optimization

4.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Coomaer.com main page is 4.8 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. 65% of websites need less resources to load. Images take 4.6 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 27.5 kB

  • Original 34.1 kB
  • After minification 29.0 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. This page needs HTML code to be minified as it can gain 5.0 kB, which is 15% 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 27.5 kB or 81% of the original size.

Image Optimization

-6%

Potential reduce by 272.8 kB

  • Original 4.6 MB
  • After minification 4.3 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. Coomaer images are well optimized though.

JavaScript Optimization

-28%

Potential reduce by 37.5 kB

  • Original 134.6 kB
  • After minification 134.6 kB
  • After compression 97.1 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 37.5 kB or 28% of the original size.

CSS Optimization

-45%

Potential reduce by 45.1 kB

  • Original 101.2 kB
  • After minification 101.2 kB
  • After compression 56.1 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. Coomaer.com needs all CSS files to be minified and compressed as it can save up to 45.1 kB or 45% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (6%)

Requests Now

53

After Optimization

50

  • Images
  • JavaScript
  • CSS

The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Coomaer. 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.

Network Requests Diagram

Accessibility Review

coomaer.com accessibility score

40

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

High

Definition list items are not wrapped in <dl> elements

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

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

Names and labels

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.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

coomaer.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

coomaer.com SEO score

67

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Coomaer.com can be misinterpreted by Google and other search engines. Our service has detected that English 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 Coomaer.com 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

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