Tools & Wizards About Us

Report Summary

  • 60

    Performance

    Renders faster than
    75% of other websites

  • 56

    Accessibility

    Visual factors better than
    that of 24% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

truelab.cn

德国VITLAB，德国KNF 凯恩孚，英国ELGA 埃尔格，美国Aqualab，日本松下，台湾祥泰，授权代理商-上海楚柏官方网站!

Page Load Speed

14.8 sec in total

First Response

4.7 sec

Resources Loaded

10 sec

Page Rendered

92 ms

About Website

Welcome to truelab.cn homepage info - get ready to check Truelab best content right away, or after learning these important things about truelab.cn

上海楚柏是德国VITLAB，德国KNF 凯恩孚，英国ELGA 埃尔格，美国Aqualab，日本松下，台湾祥泰，上海世平，昌琨实业，上海析友，上海慧泰，上海佳航，北京海科天创等品牌在中国地区或上海区域的授权代理商。

Visit truelab.cn

Key Findings

We analyzed Truelab.cn page load time and found that the first response time was 4.7 sec and then it took 10.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

truelab.cn performance score

60

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

79/100

10%

LCP (Largest Contentful Paint)

Value2.6 s

88/100

25%

SI (Speed Index)

Value11.0 s

6/100

10%

TBT (Total Blocking Time)

Value700 ms

42/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value11.1 s

20/100

10%

Network Requests Diagram

truelab.cn

4708 ms

TruelabStyle.css

629 ms

ChexkTest.js

212 ms

jquery-1.6.js

633 ms

Logo.gif

413 ms

Our browser made a total of 97 requests to load all elements on the main page. We found that 96% of them (93 requests) were addressed to the original Truelab.cn, 2% (2 requests) were made to Hm.baidu.com and 1% (1 request) were made to Goutong.baidu.com. The less responsive or slowest element that took the longest time to load (4.7 sec) belongs to the original domain Truelab.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 468.8 kB (34%)

Content Size

1.4 MB

After Optimization

928.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Truelab.cn main page is 1.4 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. 40% of websites need less resources to load. Images take 821.6 kB which makes up the majority of the site volume.

HTML Optimization

-68%

Potential reduce by 252.6 kB

  • Original 372.5 kB
  • After minification 315.1 kB
  • After compression 119.9 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 57.4 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 252.6 kB or 68% of the original size.

Image Optimization

-24%

Potential reduce by 198.6 kB

  • Original 821.6 kB
  • After minification 623.0 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, Truelab needs image optimization as it can save up to 198.6 kB or 24% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-8%

Potential reduce by 16.6 kB

  • Original 198.4 kB
  • After minification 198.4 kB
  • After compression 181.8 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. This website has mostly compressed JavaScripts.

CSS Optimization

-23%

Potential reduce by 955 B

  • Original 4.2 kB
  • After minification 4.2 kB
  • After compression 3.2 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. Truelab.cn needs all CSS files to be minified and compressed as it can save up to 955 B or 23% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (11%)

Requests Now

96

After Optimization

85

  • Images
  • JavaScript
  • CSS

The browser has sent 96 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Truelab. 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.

Network Requests Diagram

Accessibility Review

truelab.cn accessibility score

56

Accessibility Issues

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.

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

High

<object> elements do not have alternate text

Best Practices

truelab.cn 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

SEO Factors

truelab.cn SEO score

54

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

High

Document uses plugins

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Truelab.cn 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 Truelab.cn 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 Truelab. 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: