Tools & Wizards About Us
certeg.com screenshot

Report Summary

  • 51

    Performance

    Renders faster than
    69% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

certeg.com

China Steel pipe Manufacturers | Steel coil Suppliers - Certeg Steel profile Factory

Page Load Speed

5.9 sec in total

First Response

559 ms

Resources Loaded

5 sec

Page Rendered

335 ms

certeg.com screenshot

About Website

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

China Certeg is one of the leading Steel pipe, Steel coil, roofing sheet, Sandwich panel, Steel profile manufacturers and suppliers in China, also supporting customized service. Be free to wholesale h...

Visit certeg.com

Key Findings

We analyzed Certeg.com page load time and found that the first response time was 559 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

certeg.com performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

12/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value8.5 s

18/100

10%

TBT (Total Blocking Time)

Value170 ms

92/100

30%

CLS (Cumulative Layout Shift)

Value0.104

88/100

15%

TTI (Time to Interactive)

Value8.0 s

43/100

10%

Network Requests Diagram

certeg.com

559 ms

certeg.com

1017 ms

gtm.js

58 ms

js

105 ms

swiper.min.css

726 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 2% of them (2 requests) were addressed to the original Certeg.com, 76% (69 requests) were made to Cdn.multi-masters.com and 14% (13 requests) were made to Embed.tawk.to. The less responsive or slowest element that took the longest time to load (1.7 sec) relates to the external source Z12.cnzz.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 891.5 kB (8%)

Content Size

11.4 MB

After Optimization

10.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Certeg.com main page is 11.4 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. Only a small number of websites need less resources to load. Images take 11.0 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 38.5 kB

  • Original 45.7 kB
  • After minification 34.2 kB
  • After compression 7.2 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 11.5 kB, which is 25% 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 38.5 kB or 84% of the original size.

Image Optimization

-7%

Potential reduce by 826.2 kB

  • Original 11.0 MB
  • After minification 10.2 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. Certeg images are well optimized though.

JavaScript Optimization

-9%

Potential reduce by 25.7 kB

  • Original 275.0 kB
  • After minification 275.0 kB
  • After compression 249.3 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

-6%

Potential reduce by 1.0 kB

  • Original 15.6 kB
  • After minification 15.6 kB
  • After compression 14.6 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. Certeg.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 28 (31%)

Requests Now

89

After Optimization

61

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 89 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Certeg. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

certeg.com

certeg.com

559 ms

certeg.com

certeg.com

1017 ms

gtm.js

gtm.js

58 ms

js

js

105 ms

swiper.min.css

swiper.min.css

726 ms

animate.min.css

animate.min.css

728 ms

slider-pro.min.css

slider-pro.min.css

732 ms

common.css

common.css

733 ms

index.css

index.css

732 ms

jquery.min.js

jquery.min.js

735 ms

jquery.pagination.min.js

jquery.pagination.min.js

748 ms

jquery.sliderPro.min.js

jquery.sliderPro.min.js

749 ms

mt-tabpage.js

mt-tabpage.js

747 ms

swiper.animate1.0.3.min.js

swiper.animate1.0.3.min.js

746 ms

swiper.min.js

swiper.min.js

748 ms

common.js

common.js

760 ms

z_stat.php

z_stat.php

1429 ms

1er6anvcb

1er6anvcb

55 ms

logo.png

logo.png

8 ms

search-icon.png

search-icon.png

9 ms

navBtn.png

navBtn.png

9 ms

banner-1.jpg

banner-1.jpg

15 ms

20390a12-2af4-4dbe-b2d0-c487694a4a75.png

20390a12-2af4-4dbe-b2d0-c487694a4a75.png

21 ms

banner3.jpg

banner3.jpg

11 ms

26ccae95-12ee-4f68-8240-1f9bd0be5ee1.jpg

26ccae95-12ee-4f68-8240-1f9bd0be5ee1.jpg

18 ms

banlistno-1.png

banlistno-1.png

9 ms

banlistcheck-1.png

banlistcheck-1.png

10 ms

banlistno-2.png

banlistno-2.png

14 ms

banlistcheck-2.png

banlistcheck-2.png

13 ms

banlistno-3.png

banlistno-3.png

15 ms

banlistcheck-3.png

banlistcheck-3.png

20 ms

banlistno-4.png

banlistno-4.png

19 ms

banlistcheck-4.png

banlistcheck-4.png

20 ms

first~1.jpg

first~1.jpg

25 ms

steel-1.png

steel-1.png

22 ms

steel-2.png

steel-2.png

22 ms

steel-3.png

steel-3.png

27 ms

steel-4.png

steel-4.png

22 ms

steel-new~1.jpg

steel-new~1.jpg

24 ms

tab-1.png

tab-1.png

27 ms

tab-2.png

tab-2.png

27 ms

tab-3.png

tab-3.png

29 ms

tab-4.png

tab-4.png

27 ms

three.jpg

three.jpg

29 ms

wall.png

wall.png

29 ms

door.png

door.png

30 ms

panel.png

panel.png

33 ms

condensing%20unit.png

condensing%20unit.png

33 ms

four.jpg

four.jpg

33 ms

a3e7b0c6-2834-4a9f-9c8a-4a0be2247e71.jpg

a3e7b0c6-2834-4a9f-9c8a-4a0be2247e71.jpg

32 ms

6ad248ff-921d-4a6f-8da3-e46229cc0b01.jpg

6ad248ff-921d-4a6f-8da3-e46229cc0b01.jpg

31 ms

29134a10-0afc-4af6-b048-434a860d77c7.jpg

29134a10-0afc-4af6-b048-434a860d77c7.jpg

30 ms

42342582-9017-4a5b-9dea-4e5936a3b897.jpg

42342582-9017-4a5b-9dea-4e5936a3b897.jpg

34 ms

9b8d08b3-d356-427b-8dfe-f9ef63404282.jpg

9b8d08b3-d356-427b-8dfe-f9ef63404282.jpg

38 ms

valli-3.jpg

valli-3.jpg

35 ms

619d5655-e272-44b0-907d-085c0610f829.jpg

619d5655-e272-44b0-907d-085c0610f829.jpg

34 ms

3dc8fde6-f280-454e-9ede-1dca1de131ea.jpg

3dc8fde6-f280-454e-9ede-1dca1de131ea.jpg

34 ms

7ef42133-456e-4ab5-9ecb-a7131008d624.jpg

7ef42133-456e-4ab5-9ecb-a7131008d624.jpg

32 ms

2ec1d8f4-ddf6-4116-bdc5-5de23eeceecc.jpg

2ec1d8f4-ddf6-4116-bdc5-5de23eeceecc.jpg

36 ms

eda398d7-f94b-4d93-89a3-4cd3042c5c5a.jpg

eda398d7-f94b-4d93-89a3-4cd3042c5c5a.jpg

34 ms

e87c4e72-2ff5-4338-8045-8543c8054de4.jpg

e87c4e72-2ff5-4338-8045-8543c8054de4.jpg

33 ms

cate-1.jpg

cate-1.jpg

32 ms

jiantou.png

jiantou.png

29 ms

cate-2.jpg

cate-2.jpg

29 ms

cate-3.jpg

cate-3.jpg

29 ms

cate-4.jpg

cate-4.jpg

29 ms

cate-5-1.jpg

cate-5-1.jpg

29 ms

gongsi-icon.png

gongsi-icon.png

26 ms

about.png

about.png

28 ms

chenggong.png

chenggong.png

25 ms

shibai.png

shibai.png

26 ms

facebookfoot.png

facebookfoot.png

27 ms

youtubifoot-icon.png

youtubifoot-icon.png

25 ms

baf725d9-b27e-46d4-908c-1b7596e36805.jpg

baf725d9-b27e-46d4-908c-1b7596e36805.jpg

24 ms

stat.htm

stat.htm

1700 ms

c.js

c.js

897 ms

z_stat.php

z_stat.php

333 ms

stat.htm

stat.htm

670 ms

contact-bgi.png

contact-bgi.png

40 ms

twk-arr-find-polyfill.js

twk-arr-find-polyfill.js

15 ms

twk-object-values-polyfill.js

twk-object-values-polyfill.js

20 ms

twk-event-polyfill.js

twk-event-polyfill.js

18 ms

twk-entries-polyfill.js

twk-entries-polyfill.js

22 ms

twk-iterator-polyfill.js

twk-iterator-polyfill.js

22 ms

twk-promise-polyfill.js

twk-promise-polyfill.js

17 ms

twk-main.js

twk-main.js

33 ms

twk-vendor.js

twk-vendor.js

29 ms

twk-chunk-vendors.js

twk-chunk-vendors.js

32 ms

twk-chunk-common.js

twk-chunk-common.js

39 ms

twk-runtime.js

twk-runtime.js

38 ms

twk-app.js

twk-app.js

90 ms

Accessibility Review

certeg.com accessibility score

94

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.

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

Links do not have a discernible name

Best Practices

certeg.com best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

certeg.com SEO score

93

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

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

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 Certeg.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 Certeg.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

certeg.com

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