Tools & Wizards About Us
sevencol.com screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 43

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

sevencol.com

明博体育官方网站（中国）有限公司

Page Load Speed

31 sec in total

First Response

1 sec

Resources Loaded

29.5 sec

Page Rendered

560 ms

sevencol.com screenshot

About Website

Click here to check amazing Sevencol content for Morocco. Otherwise, check out these important facts you probably never knew about sevencol.com

明博体育官方网站（中国）有限公司成立于1998年11月注册资金28亿（uu推荐发财）是上海建工集团股份有限公司旗下的具有机电安装工程施工总承包能力的大型安装企业。是广州交通投资集团有限公司共同出资建立的大型现代化企业。成立于在深圳证券交易所上市（股票代码：002514）。明博体育官方网站（中国）有限公司技股份有限公司座落于美丽的杭州湾畔一余姚滨海新城。公司注册资本10180万元，固定资产总投资18...

Visit sevencol.com

Key Findings

We analyzed Sevencol.com page load time and found that the first response time was 1 sec and then it took 30 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there were 2 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

sevencol.com performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.0 s

4/100

10%

LCP (Largest Contentful Paint)

Value29.3 s

0/100

25%

SI (Speed Index)

Value11.2 s

5/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.722

6/100

15%

TTI (Time to Interactive)

Value15.4 s

7/100

10%

Network Requests Diagram

sevencol.com

1002 ms

sevencol.com

997 ms

www.sevencol.com

540 ms

www.sevencol.com

1484 ms

ld.js

1598 ms

Our browser made a total of 77 requests to load all elements on the main page. We found that 81% of them (62 requests) were addressed to the original Sevencol.com, 9% (7 requests) were made to Jifa001.com and 5% (4 requests) were made to Collect-v6.51.la. The less responsive or slowest element that took the longest time to load (19.7 sec) belongs to the original domain Sevencol.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (19%)

Content Size

6.2 MB

After Optimization

5.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sevencol.com main page is 6.2 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. 45% of websites need less resources to load. Images take 6.0 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 25.9 kB

  • Original 32.9 kB
  • After minification 32.8 kB
  • After compression 6.9 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. 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 25.9 kB or 79% of the original size.

Image Optimization

-19%

Potential reduce by 1.1 MB

  • Original 6.0 MB
  • After minification 4.9 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, Sevencol needs image optimization as it can save up to 1.1 MB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-14%

Potential reduce by 10.5 kB

  • Original 75.6 kB
  • After minification 75.4 kB
  • After compression 65.1 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 10.5 kB or 14% of the original size.

CSS Optimization

-16%

Potential reduce by 1.5 kB

  • Original 9.0 kB
  • After minification 9.0 kB
  • After compression 7.6 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. Sevencol.com needs all CSS files to be minified and compressed as it can save up to 1.5 kB or 16% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (21%)

Requests Now

63

After Optimization

50

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sevencol. 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 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

sevencol.com

sevencol.com

1002 ms

sevencol.com

sevencol.com

997 ms

www.sevencol.com

www.sevencol.com

540 ms

www.sevencol.com

www.sevencol.com

1484 ms

ld.js

ld.js

1598 ms

global.css

global.css

254 ms

home.css

home.css

504 ms

jquery.min.js

jquery.min.js

972 ms

layer.js

layer.js

730 ms

main.js

main.js

732 ms

owlbase.css

owlbase.css

753 ms

owl.carousel.js

owl.carousel.js

752 ms

index.js

index.js

751 ms

ld.js

ld.js

1202 ms

hm.js

hm.js

1429 ms

ld.html

ld.html

224 ms

logo.jpg

logo.jpg

727 ms

sosuo.jpg

sosuo.jpg

248 ms

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202103080202100424.jpg

1212 ms

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202209231559459136.jpg

1484 ms

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1241 ms

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1443 ms

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1455 ms

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1451 ms

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1699 ms

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1985 ms

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1937 ms

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1704 ms

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1704 ms

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1734 ms

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2464 ms

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1962 ms

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1958 ms

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20202111523472651.jpg

1993 ms

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202029173724993.png

2194 ms

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20202817521767727.png

2218 ms

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20202916335939909.png

2220 ms

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2239 ms

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202022011153188393.png

2246 ms

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2446 ms

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20202614584341678.png

2712 ms

n1.jpg

n1.jpg

2466 ms

n2.jpg

n2.jpg

2493 ms

n3.jpg

n3.jpg

2516 ms

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202104200903070363.png

2691 ms

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202104200913449344.jpg

2712 ms

l02.png

l02.png

2711 ms

a.png

a.png

2744 ms

ewm.jpg

ewm.jpg

2767 ms

side_icon01.png

side_icon01.png

2935 ms

side_icon02.png

side_icon02.png

2961 ms

side_icon04.png

side_icon04.png

2961 ms

js-sdk-pro.min.js

js-sdk-pro.min.js

500 ms

style.css

style.css

249 ms

tz.js

tz.js

491 ms

ky-section.png

ky-section.png

1273 ms

activity.png

activity.png

10732 ms

hm.gif

hm.gif

328 ms

layer.css

layer.css

2719 ms

bg.jpg

bg.jpg

2016 ms

collect

collect

1774 ms

collect

collect

1656 ms

collect

collect

1649 ms

collect

collect

1668 ms

side_icon05.png

side_icon05.png

2290 ms

ico_tel_01.gif

ico_tel_01.gif

1136 ms

cart.gif

cart.gif

251 ms

cbg.gif

cbg.gif

1148 ms

jianzuo.png

jianzuo.png

257 ms

catbg.png

catbg.png

255 ms

l_menu_bg.png

l_menu_bg.png

19662 ms

catlbox.png

catlbox.png

19661 ms

dot1.gif

dot1.gif

458 ms

dot1.png

dot1.png

434 ms

dot2.png

dot2.png

669 ms

l.png

l.png

1565 ms

r.png

r.png

1800 ms

Accessibility Review

sevencol.com accessibility score

43

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

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

sevencol.com best practices score

50

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

SEO Factors

sevencol.com SEO score

92

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

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sevencol.com 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 Sevencol.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

sevencol.com

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