Tools & Wizards About Us
21emba.com screenshot

Report Summary

  • 63

    Performance

    Renders faster than
    77% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

21emba.com

管理资源网_培训讲师_企业内训_企业培训_教育培训信息平台

Page Load Speed

16.8 sec in total

First Response

6.1 sec

Resources Loaded

10.4 sec

Page Rendered

281 ms

21emba.com screenshot

About Website

Welcome to 21emba.com homepage info - get ready to check 21 Emba best content right away, or after learning these important things about 21emba.com

管理资源网成立于2006年,是国内较早关注企业管理培训的网站之一。为企业提供管理咨询、企业内训、高管研修、公开课培训、培训讲师合作等服务，为企业的快速发展与团队建设提供了有力的支持。

Visit 21emba.com

Key Findings

We analyzed 21emba.com page load time and found that the first response time was 6.1 sec and then it took 10.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

21emba.com performance score

63

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

19/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

34/100

25%

SI (Speed Index)

Value10.2 s

8/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.092

91/100

15%

TTI (Time to Interactive)

Value4.3 s

85/100

10%

Network Requests Diagram

21emba.com

6060 ms

index.css

659 ms

index.css

1988 ms

js.js

328 ms

js.js

660 ms

Our browser made a total of 80 requests to load all elements on the main page. We found that 45% of them (36 requests) were addressed to the original 21emba.com, 49% (39 requests) were made to New.qg68.cn and 6% (5 requests) were made to Bdimg.share.baidu.com. The less responsive or slowest element that took the longest time to load (6.1 sec) belongs to the original domain 21emba.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 170.2 kB (68%)

Content Size

251.9 kB

After Optimization

81.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 21emba.com main page is 251.9 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. 15% of websites need less resources to load. HTML takes 143.4 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 124.1 kB

  • Original 143.4 kB
  • After minification 135.2 kB
  • After compression 19.3 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 124.1 kB or 87% of the original size.

Image Optimization

-7%

Potential reduce by 3.3 kB

  • Original 47.3 kB
  • After minification 44.0 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. 21 Emba images are well optimized though.

JavaScript Optimization

-61%

Potential reduce by 20.7 kB

  • Original 33.9 kB
  • After minification 33.9 kB
  • After compression 13.2 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 20.7 kB or 61% of the original size.

CSS Optimization

-81%

Potential reduce by 22.1 kB

  • Original 27.4 kB
  • After minification 26.0 kB
  • After compression 5.3 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. 21emba.com needs all CSS files to be minified and compressed as it can save up to 22.1 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (27%)

Requests Now

60

After Optimization

44

  • Images
  • JavaScript
  • CSS

The browser has sent 60 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 21 Emba. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

21emba.com

21emba.com

6060 ms

index.css

index.css

659 ms

index.css

index.css

1988 ms

js.js

js.js

328 ms

js.js

js.js

660 ms

sub1.jpg

sub1.jpg

330 ms

Connect_logo_3.png

Connect_logo_3.png

331 ms

240.png

240.png

652 ms

logo.jpg

logo.jpg

662 ms

search.jpg

search.jpg

664 ms

content_1_2_2_ad_img.jpg

content_1_2_2_ad_img.jpg

664 ms

course_2060.gif

course_2060.gif

666 ms

04091944-admin.jpg

04091944-admin.jpg

996 ms

15163444-admin.jpg

15163444-admin.jpg

1025 ms

01111852-admin.jpg

01111852-admin.jpg

3974 ms

content_2_2_1_neixunlist_p_div.gif

content_2_2_1_neixunlist_p_div.gif

1005 ms

course_4620.gif

course_4620.gif

1001 ms

07102750-admin.jpg

07102750-admin.jpg

2036 ms

07101748-admin.jpg

07101748-admin.jpg

2642 ms

06132348-admin.jpg

06132348-admin.jpg

2673 ms

dian.jpg

dian.jpg

1331 ms

20093021-81631.jpg

20093021-81631.jpg

1356 ms

20092719-81631.jpg

20092719-81631.jpg

2667 ms

20092516-81631.jpg

20092516-81631.jpg

1708 ms

27162438-695.jpg

27162438-695.jpg

2128 ms

24162944-77036.jpg

24162944-77036.jpg

2421 ms

26140527-69719.jpg

26140527-69719.jpg

3456 ms

060921094650-administrator.jpg

060921094650-administrator.jpg

2766 ms

060921160656-administrator.gif

060921160656-administrator.gif

2970 ms

060918155745-administrator.jpg

060918155745-administrator.jpg

2995 ms

course_15369.jpg

course_15369.jpg

2999 ms

09100719-admin.jpg

09100719-admin.jpg

3115 ms

course_2063.gif

course_2063.gif

3302 ms

dian.jpg

dian.jpg

3323 ms

hongdun.gif

hongdun.gif

3327 ms

110.gif

110.gif

3447 ms

buliang.gif

buliang.gif

3631 ms

scanv_rz_logo_47.png

scanv_rz_logo_47.png

3650 ms

top-1.jpg

top-1.jpg

331 ms

top_search.jpg

top_search.jpg

604 ms

top_search_aa.jpg

top_search_aa.jpg

658 ms

search.jpg

search.jpg

657 ms

content_1_1_1.jpg

content_1_1_1.jpg

650 ms

content_1_1_3.jpg

content_1_1_3.jpg

617 ms

content_1_1_5.jpg

content_1_1_5.jpg

622 ms

content_1_2_1.jpg

content_1_2_1.jpg

891 ms

content_1_2_3.jpg

content_1_2_3.jpg

954 ms

content_1_3_1.jpg

content_1_3_1.jpg

960 ms

content_1_3_3.jpg

content_1_3_3.jpg

959 ms

content_2_1_1.jpg

content_2_1_1.jpg

960 ms

content_2_2_1_neixunlist_p.jpg

content_2_2_1_neixunlist_p.jpg

956 ms

content_2_3.jpg

content_2_3.jpg

1219 ms

content_3_1_left_top.jpg

content_3_1_left_top.jpg

1292 ms

content_3_1_left_3.jpg

content_3_1_left_3.jpg

1284 ms

content_4_1_left_top.jpg

content_4_1_left_top.jpg

1296 ms

content_4_1_right_top.jpg

content_4_1_right_top.jpg

1295 ms

content_4_1_right_di.jpg

content_4_1_right_di.jpg

1291 ms

content_5_1_right_top.jpg

content_5_1_right_top.jpg

1548 ms

shell_v2.js

shell_v2.js

451 ms

sub1.jpg

sub1.jpg

1352 ms

Connect_logo_3.png

Connect_logo_3.png

1359 ms

logger.js

logger.js

218 ms

bds_s_v2.js

bds_s_v2.js

862 ms

240.png

240.png

1044 ms

logo.jpg

logo.jpg

1364 ms

search.jpg

search.jpg

1031 ms

content_1_2_2_ad_img.jpg

content_1_2_2_ad_img.jpg

1272 ms

course_2060.gif

course_2060.gif

2026 ms

course_4620.gif

course_4620.gif

1723 ms

content_2_2_1_neixunlist_p_div.gif

content_2_2_1_neixunlist_p_div.gif

1091 ms

dian.jpg

dian.jpg

698 ms

bdsstyle.css

bdsstyle.css

218 ms

r1.gif

r1.gif

224 ms

course_15369.jpg

course_15369.jpg

370 ms

course_2063.gif

course_2063.gif

675 ms

dian.jpg

dian.jpg

330 ms

hongdun.gif

hongdun.gif

330 ms

110.gif

110.gif

332 ms

buliang.gif

buliang.gif

335 ms

scanv_rz_logo_47.png

scanv_rz_logo_47.png

331 ms

Accessibility Review

21emba.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.

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

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

21emba.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

High

Page has valid source maps

SEO Factors

21emba.com SEO score

82

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 21emba.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 21emba.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

21emba.com

Open Graph description is not detected on the main page of 21 Emba. 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: