Tools & Wizards About Us
bi.dataguru.cn screenshot

Report Summary

  • 36

    Performance

    Renders faster than
    56% of other websites

  • 56

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 84

    SEO

    Google-friendlier than
    53% of websites

bi.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

Page Load Speed

33.3 sec in total

First Response

6.1 sec

Resources Loaded

26.5 sec

Page Rendered

675 ms

bi.dataguru.cn screenshot

About Website

Click here to check amazing Bi Dataguru content for China. Otherwise, check out these important facts you probably never knew about bi.dataguru.cn

Dataguru炼数成金是专注于Hadoop培训、大数据、数据分析、人工智能、数据可视化、运维自动化等技术和业务讨论的IT技术专业社区及面向企业和个人网络逆向培训服务机构,通过系列实战性Hadoop培训课程,包括Spark,Hbase,机器学习，深度学习，自然语言处理，网络爬虫，java开发，python开发，python数据分析，kafka，ELK等最前沿的大数据技术,提供来自互联网一线公司专家...

Visit bi.dataguru.cn

Key Findings

We analyzed Bi.dataguru.cn page load time and found that the first response time was 6.1 sec and then it took 27.2 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

bi.dataguru.cn performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

56/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

46/100

25%

SI (Speed Index)

Value9.3 s

13/100

10%

TBT (Total Blocking Time)

Value5,300 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value9.8 s

28/100

10%

Network Requests Diagram

bi.dataguru.cn

6106 ms

style_4_common.css

1417 ms

style_4_portal_list.css

708 ms

jquery-1.8.3.min.js

1782 ms

common.js

2425 ms

Our browser made a total of 88 requests to load all elements on the main page. We found that 48% of them (42 requests) were addressed to the original Bi.dataguru.cn, 34% (30 requests) were made to Attach.dataguru.cn and 6% (5 requests) were made to Club.dataguru.cn. The less responsive or slowest element that took the longest time to load (20.4 sec) relates to the external source Attach.dataguru.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 235.1 kB (32%)

Content Size

726.3 kB

After Optimization

491.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Bi.dataguru.cn main page is 726.3 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. 25% of websites need less resources to load. Images take 469.2 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 53.1 kB

  • Original 70.7 kB
  • After minification 68.5 kB
  • After compression 17.6 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 53.1 kB or 75% of the original size.

Image Optimization

-12%

Potential reduce by 57.4 kB

  • Original 469.2 kB
  • After minification 411.9 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, Bi Dataguru needs image optimization as it can save up to 57.4 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-67%

Potential reduce by 124.5 kB

  • Original 186.1 kB
  • After minification 176.4 kB
  • After compression 61.6 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 124.5 kB or 67% of the original size.

CSS Optimization

-48%

Potential reduce by 126 B

  • Original 265 B
  • After minification 263 B
  • After compression 139 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. Bi.dataguru.cn needs all CSS files to be minified and compressed as it can save up to 126 B or 48% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (18%)

Requests Now

82

After Optimization

67

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 82 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bi 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 9 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

bi.dataguru.cn

bi.dataguru.cn

6106 ms

style_4_common.css

style_4_common.css

1417 ms

style_4_portal_list.css

style_4_portal_list.css

708 ms

jquery-1.8.3.min.js

jquery-1.8.3.min.js

1782 ms

common.js

common.js

2425 ms

portal.js

portal.js

801 ms

header_bj.png

header_bj.png

3400 ms

logo.png

logo.png

703 ms

login.gif

login.gif

1182 ms

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210842eivvcci1iti0znbb.jpg

1542 ms

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145125cw7xohzrwm1l061l.jpg

1644 ms

ping.js

ping.js

471 ms

discuz_tips.js

discuz_tips.js

458 ms

jquery.cookie.js

jquery.cookie.js

365 ms

110637p3f8ruhhp8jspo2r.jpg

110637p3f8ruhhp8jspo2r.jpg

1436 ms

icon_down.jpg

icon_down.jpg

427 ms

button_search.jpg

button_search.jpg

365 ms

ksdh_q.jpg

ksdh_q.jpg

365 ms

icon_hz.jpg

icon_hz.jpg

712 ms

icon_hy.jpg

icon_hy.jpg

715 ms

icon_tz.jpg

icon_tz.jpg

714 ms

icon_sc.jpg

icon_sc.jpg

2003 ms

icon_dj.jpg

icon_dj.jpg

850 ms

icon_task.jpg

icon_task.jpg

1064 ms

icon_chongzhi.jpg

icon_chongzhi.jpg

1067 ms

icon_tixian.jpg

icon_tixian.jpg

2193 ms

icon_myclass.jpg

icon_myclass.jpg

1297 ms

icon_awardplan.jpg

icon_awardplan.jpg

2087 ms

icon_convert.jpg

icon_convert.jpg

1415 ms

icon_enterprise.jpg

icon_enterprise.jpg

1725 ms

nav_bj.jpg

nav_bj.jpg

1765 ms

bg_top.gif

bg_top.gif

2135 ms

bg_main.gif

bg_main.gif

2115 ms

security.png

security.png

4735 ms

1.jpg

1.jpg

6645 ms

2.jpg

2.jpg

3893 ms

left_gb_an.gif

left_gb_an.gif

2563 ms

left_zk_zn.gif

left_zk_zn.gif

2543 ms

icon_close.png

icon_close.png

3266 ms

right_gb_an.gif

right_gb_an.gif

2893 ms

right_zk_zn.gif

right_zk_zn.gif

2988 ms

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6056 ms

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7676 ms

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2433 ms

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6522 ms

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2106 ms

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2911 ms

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4888 ms

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9423 ms

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11170 ms

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6826 ms

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14113 ms

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10036 ms

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9060 ms

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14507 ms

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14140 ms

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14722 ms

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14782 ms

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15157 ms

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14969 ms

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20361 ms

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20362 ms

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16316 ms

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18949 ms

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17476 ms

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19503 ms

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20361 ms

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20363 ms

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20083 ms

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20362 ms

search.png

search.png

999 ms

pt_item.png

pt_item.png

904 ms

feed.gif

feed.gif

2300 ms

px.png

px.png

1052 ms

arw_r.gif

arw_r.gif

1053 ms

ODY1NTgyNg==.js

ODY1NTgyNg==.js

219 ms

h.js

h.js

488 ms

hm.gif

hm.gif

332 ms

bg_end.gif

bg_end.gif

2272 ms

user_visited.php

user_visited.php

4534 ms

site_left.php

site_left.php

3036 ms

site_right.php

site_right.php

2752 ms

tel.jpg

tel.jpg

1584 ms

ewm.jpg

ewm.jpg

494 ms

fingerprint.js

fingerprint.js

766 ms

button_111.gif

button_111.gif

439 ms

button_111.gif

button_111.gif

469 ms

button_111.gif

button_111.gif

449 ms

Accessibility Review

bi.dataguru.cn accessibility score

56

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.

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

<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

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

Best Practices

bi.dataguru.cn 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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

bi.dataguru.cn SEO score

84

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

    GBK

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Bi.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 Bi.dataguru.cn main page’s claimed encoding is gbk. 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

bi.dataguru.cn

Open Graph description is not detected on the main page of Bi 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: