Tools & Wizards About Us

Report Summary

  • 87

    Performance

    Renders faster than
    90% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 39% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

it689.com

IT689_技术引领未来 - 国内专业的IT技术网站

Page Load Speed

45.9 sec in total

First Response

1.5 sec

Resources Loaded

44.2 sec

Page Rendered

182 ms

About Website

Welcome to it689.com homepage info - get ready to check IT689 best content for China right away, or after learning these important things about it689.com

国内专业的IT技术网站IT689(www.it689.com)是电脑爱好者的电脑技术学习及编程开发学习交流的网站，提供网络管理,信息安全,操作系统应用,办公软件应用,软件开发,服务器管理,数据库应用,人工智能等技术学习交流和业界最新动态。

Visit it689.com

Key Findings

We analyzed It689.com page load time and found that the first response time was 1.5 sec and then it took 44.4 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 2 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

it689.com performance score

87

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

88/100

10%

LCP (Largest Contentful Paint)

Value1.9 s

97/100

25%

SI (Speed Index)

Value6.8 s

35/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.8 s

67/100

10%

Network Requests Diagram

it689.com

1485 ms

www.it689.com

8605 ms

style.css

748 ms

zzsc.css

789 ms

jquery-1.10.2.js

8768 ms

Our browser made a total of 26 requests to load all elements on the main page. We found that 46% of them (12 requests) were addressed to the original It689.com, 46% (12 requests) were made to Bdimg.share.baidu.com and 4% (1 request) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (19.7 sec) belongs to the original domain It689.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 30.2 kB (36%)

Content Size

85.1 kB

After Optimization

54.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of It689.com main page is 85.1 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. Only 10% of websites need less resources to load. Javascripts take 48.3 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 21.4 kB

  • Original 29.0 kB
  • After minification 27.7 kB
  • After compression 7.5 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 21.4 kB or 74% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 283 B
  • After minification 283 B

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. IT689 images are well optimized though.

JavaScript Optimization

-7%

Potential reduce by 3.2 kB

  • Original 48.3 kB
  • After minification 48.3 kB
  • After compression 45.2 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

-75%

Potential reduce by 5.6 kB

  • Original 7.5 kB
  • After minification 7.5 kB
  • After compression 1.9 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. It689.com needs all CSS files to be minified and compressed as it can save up to 5.6 kB or 75% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (55%)

Requests Now

22

After Optimization

10

  • Images
  • JavaScript
  • CSS

The browser has sent 22 CSS, Javascripts, AJAX and image requests in order to completely render the main page of IT689. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

it689.com accessibility score

73

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

Best Practices

it689.com best practices score

67

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

SEO Factors

it689.com SEO score

79

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

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

High

Tap targets are not sized appropriately

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 It689.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 It689.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 IT689. 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: