45.9 sec in total
1.5 sec
44.2 sec
182 ms
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.comWe 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.
it689.com performance score
name
value
score
weighting
Value1.9 s
88/100
10%
Value1.9 s
97/100
25%
Value6.8 s
35/100
10%
Value120 ms
97/100
30%
Value0
100/100
15%
Value5.8 s
67/100
10%
1485 ms
8605 ms
748 ms
789 ms
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 size can be reduced by 30.2 kB (36%)
85.1 kB
54.9 kB
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.
Potential reduce by 21.4 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.
Potential reduce by 0 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.
Potential reduce by 3.2 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.
Potential reduce by 5.6 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. 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.
Number of requests can be reduced by 12 (55%)
22
10
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.
it689.com
1485 ms
www.it689.com
8605 ms
style.css
748 ms
zzsc.css
789 ms
jquery-1.10.2.js
8768 ms
zzsc.js
1828 ms
1423465024874384.jpg
9906 ms
blank.gif
405 ms
dian.jpg
1516 ms
hm.js
19619 ms
share.js
1173 ms
slide_api.js
1513 ms
slide_view.js
3681 ms
select_api.js
708 ms
select_view.js
725 ms
image_api.js
3725 ms
image_view.js
883 ms
tangram.js
1500 ms
api_base.js
374 ms
view_base.js
553 ms
2.jpg
6972 ms
logger.js
618 ms
slide_share.css
417 ms
1423015048829336.jpg
3418 ms
1423463604672745.jpg
19673 ms
button_121.gif
452 ms
it689.com accessibility score
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
ARIA input fields do not have accessible names
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
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
it689.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
it689.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
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
Document uses legible font sizes
Tap targets are not sized appropriately
ZH
N/A
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.
it689.com
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: