Tools & Wizards About Us

Report Summary

  • 30

    Performance

    Renders faster than
    50% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 71

    SEO

    Google-friendlier than
    30% of websites

co188.com

土木在线网_土木工程网站_土木工程师职业成长家园！

Page Load Speed

8.2 sec in total

First Response

666 ms

Resources Loaded

7.1 sec

Page Rendered

453 ms

About Website

Visit co188.com now to see the best up-to-date Co 188 content for China and also check out these interesting facts you probably never knew about co188.com

土木在线(co188.com)是专业的土木建筑综合服务平台。深度覆盖建筑、结构、给排水、暖通、电气五大核心专业，主营海量工程图纸与技术资料下载、实战型职业培训课程，并提供活跃的技术交流论坛。致力于为工程设计与施工人员打造一站式资源共享与学习提升阵地。

Visit co188.com

Key Findings

We analyzed Co188.com page load time and found that the first response time was 666 ms and then it took 7.6 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

co188.com performance score

30

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

20/100

10%

LCP (Largest Contentful Paint)

Value6.9 s

6/100

25%

SI (Speed Index)

Value12.9 s

2/100

10%

TBT (Total Blocking Time)

Value460 ms

62/100

30%

CLS (Cumulative Layout Shift)

Value0.421

23/100

15%

TTI (Time to Interactive)

Value8.0 s

42/100

10%

Network Requests Diagram

co188.com

666 ms

www.co188.com

1472 ms

g.co188.com

1143 ms

g.co188.com

1324 ms

rc.js

918 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 3% of them (2 requests) were addressed to the original Co188.com, 51% (35 requests) were made to G.co188.com and 26% (18 requests) were made to Fd.co188.com. The less responsive or slowest element that took the longest time to load (2.6 sec) relates to the external source Fd.co188.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 356.4 kB (13%)

Content Size

2.8 MB

After Optimization

2.5 MB

  • HTML
  • Images
  • CSS

In fact, the total size of Co188.com main page is 2.8 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. 30% of websites need less resources to load. Images take 2.7 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 76.5 kB

  • Original 95.5 kB
  • After minification 85.3 kB
  • After compression 19.0 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 10.2 kB, which is 11% 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 76.5 kB or 80% of the original size.

Image Optimization

-10%

Potential reduce by 279.9 kB

  • Original 2.7 MB
  • After minification 2.4 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. Co 188 images are well optimized though.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 12.7 kB
  • After minification 12.7 kB
  • After compression 12.7 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. Co188.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 23 (35%)

Requests Now

66

After Optimization

43

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Co 188. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

co188.com accessibility score

84

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

Links do not have a discernible name

Best Practices

co188.com best practices score

75

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

co188.com SEO score

71

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

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 Co188.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 Co188.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 Co 188. 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: