Access it.dataguru.cn. 培训_Dataguru炼数成金_国内首创逆向收费式网络培训|专注于Hadoop培训及大数据、数据分析、数据库、编程技术、运维自动化等网络逆向培训

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

66/100

10%

LCP (Largest Contentful Paint)

Value3.3 s

70/100

25%

SI (Speed Index)

Value5.7 s

51/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value4.1 s

86/100

10%

www.dataguru.cn

1203 ms

jquery-1.8.3.min.js

696 ms

common.css

693 ms

dg_base.css

491 ms

common.js

737 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original It.dataguru.cn, 4% (3 requests) were made to Wpa.qq.com and 4% (3 requests) were made to Pub.idqqimg.com. The less responsive or slowest element that took the longest time to load (2 sec) relates to the external source Dataguru.cn.

Content Size

1.2 MB

After Optimization

382.1 kB

In fact, the total size of It.dataguru.cn main page is 1.2 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. HTML takes 816.2 kB which makes up the majority of the site volume.

HTML Optimization

-93%

Potential reduce by 758.3 kB

Original 816.2 kB
After minification 675.9 kB
After compression 57.9 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 140.2 kB, which is 17% 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 758.3 kB or 93% of the original size.

Image Optimization

-20%

Potential reduce by 61.8 kB

Original 312.2 kB
After minification 250.4 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, It Dataguru needs image optimization as it can save up to 61.8 kB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-20%

Potential reduce by 14.2 kB

Original 70.2 kB
After minification 70.2 kB
After compression 56.0 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 14.2 kB or 20% of the original size.

CSS Optimization

-24%

Potential reduce by 5.8 kB

Original 23.6 kB
After minification 23.6 kB
After compression 17.8 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. It.dataguru.cn needs all CSS files to be minified and compressed as it can save up to 5.8 kB or 24% of the original size.

Requests Now

After Optimization

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of It Dataguru. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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.

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 It.dataguru.cn 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 It.dataguru.cn 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

it.dataguru.cn

Open Graph description is not detected on the main page of It Dataguru. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

培训_Dataguru炼数成金_国内首创逆向收费式网络培训|专注于Hadoop培训及大数据、数据分析、数据库、编程技术、运维自动化等网络逆向培训

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

www.dataguru.cn

jquery-1.8.3.min.js

common.css

dg_base.css

common.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

www.dataguru.cn

jquery-1.8.3.min.js

common.css

dg_base.css

common.js

jquery.textSlider.js

dg_edu.css

jquery.cookie.js

js_login_bar.php

js_ads.php

boxy.css

jquery.boxy.js

floating-jf.js

pa

left_gb_an.gif

left_zk_zn.gif

icon_close.png

right_gb_an.gif

right_zk_zn.gif

logo.png

button_search.jpg

icon_hz.jpg

icon_hy.jpg

icon_tz.jpg

icon_sc.jpg

icon_dj.jpg

icon_task.jpg

icon_chongzhi.jpg

icon_tixian.jpg

icon_myclass.jpg

icon_awardplan.jpg

icon_convert.jpg

icon_enterprise.jpg

maps.png

button_ksbm.gif

button_wygz.png

button_tj.jpg

1.jpg

2.jpg

gaba.png

pa

pa

header_bj.png