Tools & Wizards About Us

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 38

    Best Practices

    More advanced features
    available than in
    18% of websites

  • 62

    SEO

    Google-friendlier than
    22% of websites

doc.zjtcn.com

造价通文库_工程造价基础知识下载

Page Load Speed

49 sec in total

First Response

5.5 sec

Resources Loaded

42.4 sec

Page Rendered

1 sec

About Website

Visit doc.zjtcn.com now to see the best up-to-date Doc Zjtcn content for China and also check out these interesting facts you probably never knew about doc.zjtcn.com

造价通文库是工程造价基础知识文档资料共享平台，汇集了大量工程编制实例、工程合同范本、造价管理相关的工程造价文档资料，为工程造价预算提供全方位的调研参考依据，是工程造价员和造价师资料下载及在线互动、分享、交流平台。

Visit doc.zjtcn.com

Key Findings

We analyzed Doc.zjtcn.com page load time and found that the first response time was 5.5 sec and then it took 43.4 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 5 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

doc.zjtcn.com performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.4 s

0/100

10%

LCP (Largest Contentful Paint)

Value11.4 s

0/100

25%

SI (Speed Index)

Value16.8 s

1/100

10%

TBT (Total Blocking Time)

Value1,980 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0.131

82/100

15%

TTI (Time to Interactive)

Value13.9 s

11/100

10%

Network Requests Diagram

doc.zjtcn.com

5522 ms

jquery-1.7.2_min.js

20308 ms

ConCom.js

20309 ms

common.js

6089 ms

jquery.smartFloat.js

6827 ms

Our browser made a total of 61 requests to load all elements on the main page. We found that 70% of them (43 requests) were addressed to the original Doc.zjtcn.com, 16% (10 requests) were made to C2.zjtcn.com and 3% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (20.3 sec) belongs to the original domain Doc.zjtcn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 157.8 kB (56%)

Content Size

282.7 kB

After Optimization

124.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Doc.zjtcn.com main page is 282.7 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 20% of websites need less resources to load. Images take 109.3 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 72.4 kB

  • Original 85.3 kB
  • After minification 66.2 kB
  • After compression 12.9 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. This page needs HTML code to be minified as it can gain 19.1 kB, which is 22% 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 72.4 kB or 85% of the original size.

Image Optimization

-14%

Potential reduce by 15.6 kB

  • Original 109.3 kB
  • After minification 93.7 kB

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, Doc Zjtcn needs image optimization as it can save up to 15.6 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-79%

Potential reduce by 67.9 kB

  • Original 85.5 kB
  • After minification 57.6 kB
  • After compression 17.6 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 67.9 kB or 79% of the original size.

CSS Optimization

-75%

Potential reduce by 1.9 kB

  • Original 2.6 kB
  • After minification 2.4 kB
  • After compression 652 B

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. Doc.zjtcn.com needs all CSS files to be minified and compressed as it can save up to 1.9 kB or 75% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (26%)

Requests Now

53

After Optimization

39

  • Images
  • JavaScript
  • CSS

The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Doc Zjtcn. 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

doc.zjtcn.com accessibility score

61

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

Form elements do not have associated labels

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

doc.zjtcn.com best practices score

38

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

High

Registers an unload listener

Low

Detected JavaScript libraries

High

Uses deprecated APIs

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

doc.zjtcn.com SEO score

62

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

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

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 Doc.zjtcn.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 Doc.zjtcn.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

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