Tools & Wizards About Us
co188.com screenshot

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

co188.com screenshot

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

co188.com

co188.com

666 ms

www.co188.com

www.co188.com

1472 ms

g.co188.com

g.co188.com

1143 ms

g.co188.com

g.co188.com

1324 ms

rc.js

rc.js

918 ms

ds.js

ds.js

1714 ms

hm.js

hm.js

1373 ms

gio.js

gio.js

296 ms

cof_tracker.js

cof_tracker.js

226 ms

rBJhbGYnDyGADxwiAAPm4RExW4g809.jpg

rBJhbGYnDyGADxwiAAPm4RExW4g809.jpg

2347 ms

logo_new.png

logo_new.png

223 ms

bg_edu.png

bg_edu.png

1339 ms

hot.png

hot.png

445 ms

new.png

new.png

546 ms

appCode.png

appCode.png

666 ms

arrow.png

arrow.png

667 ms

head.png

head.png

767 ms

blank.gif

blank.gif

855 ms

fvip_4437.png

fvip_4437.png

884 ms

hy.png

hy.png

885 ms

ts.png

ts.png

885 ms

blank.gif

blank.gif

973 ms

rBBhaGYWBaaAAFjvAAY7jTsDZOs211.png

rBBhaGYWBaaAAFjvAAY7jTsDZOs211.png

2518 ms

rBJhaGYWBVuABPKbAAMzslEk75g001.png

rBJhaGYWBVuABPKbAAMzslEk75g001.png

1834 ms

rBJhaGYWBPGAdXbsAAQ1iAbFL20008.png

rBJhaGYWBPGAdXbsAAQ1iAbFL20008.png

2246 ms

rBBhaGYWBIWAR7_PAAQq1f64xaw478.png

rBBhaGYWBIWAR7_PAAQq1f64xaw478.png

2266 ms

rBJhaGYrTkyAE3dHAAK09lRKTaU766.png

rBJhaGYrTkyAE3dHAAK09lRKTaU766.png

1878 ms

rBBhaGYWAx6AJrsGAALXgPy6oTU022.png

rBBhaGYWAx6AJrsGAALXgPy6oTU022.png

2633 ms

rBJhbGVVhhmAA1W_AACLW12uvFE744.jpg

rBJhbGVVhhmAA1W_AACLW12uvFE744.jpg

2063 ms

rBJhbGVVhgKAZDzLAACIQk540AM313.jpg

rBJhbGVVhgKAZDzLAACIQk540AM313.jpg

2147 ms

rBBhaGYrSImAS0fSAAAvhiMGIjg991.png

rBBhaGYrSImAS0fSAAAvhiMGIjg991.png

2274 ms

rBBhaGYrSESAJVFnAAAnVwUBPmE629.png

rBBhaGYrSESAJVFnAAAnVwUBPmE629.png

2387 ms

rBJhaGYrR-aALT98AAApbU9g1Y4229.png

rBJhaGYrR-aALT98AAApbU9g1Y4229.png

2476 ms

rBBhaGYrR3-ARSFJAAAhHJ7Y2Hg042.png

rBBhaGYrR3-ARSFJAAAhHJ7Y2Hg042.png

2504 ms

icam

icam

1150 ms

hm.gif

hm.gif

292 ms

general

general

1102 ms

status

status

1077 ms

move_collect.png

move_collect.png

252 ms

head_gg.js

head_gg.js

230 ms

head_child.js

head_child.js

214 ms

vip_expire.js

vip_expire.js

233 ms

property

property

1103 ms

recommend

recommend

1129 ms

vip_expire.js

vip_expire.js

224 ms

move_arrow1.png

move_arrow1.png

230 ms

hot1.png

hot1.png

378 ms

left_btn.png

left_btn.png

414 ms

right_btn.png

right_btn.png

416 ms

phone.png

phone.png

418 ms

wb.png

wb.png

434 ms

wx.png

wx.png

450 ms

wx_bg.png

wx_bg.png

583 ms

53icon.png

53icon.png

635 ms

group.png

group.png

635 ms

activepic.png

activepic.png

1091 ms

close7.png

close7.png

645 ms

expireNotify

expireNotify

933 ms

rBJhaGYnZ7eAIyoNAABr02EeDeU156.jpg

rBJhaGYnZ7eAIyoNAABr02EeDeU156.jpg

919 ms

rBJhbGYgrcWAEq6SAADTigo-mO8197.gif

rBJhbGYgrcWAEq6SAADTigo-mO8197.gif

1084 ms

rBJhaGYLe3-AKKp4AALqbz2wi4Q624.png

rBJhaGYLe3-AKKp4AALqbz2wi4Q624.png

1792 ms

rBBhaGYY11iAKES-AACAI5BNdv8395.png

rBBhaGYY11iAKES-AACAI5BNdv8395.png

1147 ms

rBJhaGYwuvuAVcSDAAB0vl9jGxM128.jpg

rBJhaGYwuvuAVcSDAAB0vl9jGxM128.jpg

1176 ms

contact_code.png

contact_code.png

1119 ms

wx_code.png

wx_code.png

595 ms

expireNotify

expireNotify

920 ms

nologin.html

nologin.html

206 ms

tag

tag

227 ms

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

co188.com

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: