Tools & Wizards About Us
china-roof.com screenshot

Report Summary

  • 36

    Performance

    Renders faster than
    56% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

china-roof.com

steel structure warehouse_structural steel manufacturers china_Steel structure engineering-Shijiazhuang Sanhe Steel Structure Co.,Ltd

Page Load Speed

5.7 sec in total

First Response

407 ms

Resources Loaded

5 sec

Page Rendered

271 ms

china-roof.com screenshot

About Website

Welcome to china-roof.com homepage info - get ready to check China Roof best content right away, or after learning these important things about china-roof.com

Shijiazhuang Sanhe Steel Structure Co.,Ltd is professional manufacture who's devoted to steel structure warehouse,Steel structure engineering,structural steel manufacturers.We provide the whole set of...

Visit china-roof.com

Key Findings

We analyzed China-roof.com page load time and found that the first response time was 407 ms and then it took 5.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

china-roof.com performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

44/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

27/100

25%

SI (Speed Index)

Value7.7 s

25/100

10%

TBT (Total Blocking Time)

Value420 ms

66/100

30%

CLS (Cumulative Layout Shift)

Value0.939

3/100

15%

TTI (Time to Interactive)

Value11.2 s

20/100

10%

Network Requests Diagram

china-roof.com

407 ms

china-roof.com

471 ms

gtm.js

52 ms

js

97 ms

js

119 ms

Our browser made a total of 44 requests to load all elements on the main page. We found that 89% of them (39 requests) were addressed to the original China-roof.com, 11% (5 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (3.4 sec) belongs to the original domain China-roof.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 107.4 kB (6%)

Content Size

1.7 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of China-roof.com main page is 1.7 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 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 18.5 kB

  • Original 24.1 kB
  • After minification 19.8 kB
  • After compression 5.6 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 4.3 kB, which is 18% 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 18.5 kB or 77% of the original size.

Image Optimization

-4%

Potential reduce by 69.8 kB

  • Original 1.6 MB
  • After minification 1.6 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. China Roof images are well optimized though.

JavaScript Optimization

-24%

Potential reduce by 14.8 kB

  • Original 61.7 kB
  • After minification 61.7 kB
  • After compression 46.9 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 14.8 kB or 24% of the original size.

CSS Optimization

-24%

Potential reduce by 4.2 kB

  • Original 17.3 kB
  • After minification 17.3 kB
  • After compression 13.1 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. China-roof.com needs all CSS files to be minified and compressed as it can save up to 4.2 kB or 24% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (29%)

Requests Now

41

After Optimization

29

  • Images
  • JavaScript
  • CSS

The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of China Roof. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

china-roof.com

china-roof.com

407 ms

china-roof.com

china-roof.com

471 ms

gtm.js

gtm.js

52 ms

js

js

97 ms

js

js

119 ms

Sanhe.css

Sanhe.css

88 ms

font-awesome.min.css

font-awesome.min.css

193 ms

jquery-1.10.1.min.js

jquery-1.10.1.min.js

669 ms

gbook.js

gbook.js

266 ms

owl.carousel.js

owl.carousel.js

432 ms

flickerplate.css

flickerplate.css

268 ms

modernizr-custom-v2.7.1.min.js

modernizr-custom-v2.7.1.min.js

348 ms

flickerplate.min.js

flickerplate.min.js

275 ms

en.css

en.css

340 ms

js

js

49 ms

js

js

48 ms

logo.jpg

logo.jpg

78 ms

sou.jpg

sou.jpg

77 ms

a.jpg

a.jpg

2742 ms

b.jpg

b.jpg

2465 ms

c.jpg

c.jpg

3433 ms

bj.jpg

bj.jpg

150 ms

u.png

u.png

363 ms

x1.png

x1.png

533 ms

2016330185358.jpg

2016330185358.jpg

743 ms

20190110020763626362.jpg

20190110020763626362.jpg

946 ms

2016629182440.jpg

2016629182440.jpg

1668 ms

20201022114274387438.jpg

20201022114274387438.jpg

2437 ms

20166262318.jpg

20166262318.jpg

1725 ms

20180817041291549154.jpg

20180817041291549154.jpg

2829 ms

201712273255.jpg

201712273255.jpg

2664 ms

201671020625.jpg

201671020625.jpg

2754 ms

201725202054.jpg

201725202054.jpg

2837 ms

2016711172.jpg

2016711172.jpg

2946 ms

201671131010.jpg

201671131010.jpg

3009 ms

skype.png

skype.png

3020 ms

whatsapp.png

whatsapp.png

3040 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

3275 ms

top.jpg

top.jpg

3175 ms

bot.jpg

bot.jpg

3233 ms

zuo2.png

zuo2.png

3231 ms

you2.png

you2.png

3313 ms

arrow-left-light.png

arrow-left-light.png

3356 ms

arrow-right-light.png

arrow-right-light.png

3356 ms

Accessibility Review

china-roof.com accessibility score

67

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

Links do not have a discernible name

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

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

china-roof.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

SEO Factors

china-roof.com SEO score

90

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

Mobile Friendly

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/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

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

china-roof.com

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