Tools & Wizards About Us
apelearn.com screenshot

Report Summary

  • 36

    Performance

    Renders faster than
    56% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 43% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 58

    SEO

    Google-friendlier than
    20% of websites

apelearn.com

猿课 - 负责任的IT在线培训,阿铭Linux培训,负责任的Linux培训

Page Load Speed

65 sec in total

First Response

1.1 sec

Resources Loaded

62.9 sec

Page Rendered

908 ms

apelearn.com screenshot

About Website

Visit apelearn.com now to see the best up-to-date Apelearn content for China and also check out these interesting facts you probably never knew about apelearn.com

猿课，最负责的Linux教学，6年实战经验分享，100%学会，学员就业平均薪水8000以上，阿铭带您进入Linux的世界！

Visit apelearn.com

Key Findings

We analyzed Apelearn.com page load time and found that the first response time was 1.1 sec and then it took 63.8 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 29 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

apelearn.com performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value17.7 s

0/100

10%

LCP (Largest Contentful Paint)

Value46.2 s

0/100

25%

SI (Speed Index)

Value24.0 s

0/100

10%

TBT (Total Blocking Time)

Value200 ms

90/100

30%

CLS (Cumulative Layout Shift)

Value0.206

60/100

15%

TTI (Time to Interactive)

Value22.0 s

1/100

10%

Network Requests Diagram

apelearn.com

1147 ms

demo.css

1256 ms

style.css

1116 ms

modernizr.custom.53451.js

1700 ms

style.css

1714 ms

Our browser made a total of 90 requests to load all elements on the main page. We found that 77% of them (69 requests) were addressed to the original Apelearn.com, 10% (9 requests) were made to V.apelearn.com and 3% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (20.4 sec) belongs to the original domain Apelearn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 342.1 kB (36%)

Content Size

963.5 kB

After Optimization

621.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Apelearn.com main page is 963.5 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 582.5 kB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 22.7 kB

  • Original 25.1 kB
  • After minification 6.6 kB
  • After compression 2.4 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. This page needs HTML code to be minified as it can gain 18.5 kB, which is 74% 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 22.7 kB or 91% of the original size.

Image Optimization

-10%

Potential reduce by 55.7 kB

  • Original 582.5 kB
  • After minification 526.8 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. Apelearn images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 148.3 kB

  • Original 214.9 kB
  • After minification 167.5 kB
  • After compression 66.6 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 148.3 kB or 69% of the original size.

CSS Optimization

-82%

Potential reduce by 115.3 kB

  • Original 141.0 kB
  • After minification 116.9 kB
  • After compression 25.7 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. Apelearn.com needs all CSS files to be minified and compressed as it can save up to 115.3 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (41%)

Requests Now

58

After Optimization

34

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Apelearn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

apelearn.com

apelearn.com

1147 ms

demo.css

demo.css

1256 ms

style.css

style.css

1116 ms

modernizr.custom.53451.js

modernizr.custom.53451.js

1700 ms

style.css

style.css

1714 ms

font-awesome.min.css

font-awesome.min.css

4775 ms

bootstrap.min.css

bootstrap.min.css

3091 ms

jquery.fancybox-imiker.css

jquery.fancybox-imiker.css

3094 ms

yk_public.css

yk_public.css

5427 ms

huanying.css

huanying.css

6430 ms

lesson20151230.css

lesson20151230.css

2124 ms

jquery.min.js

jquery.min.js

19783 ms

jquery.fancybox-1.3.4.js

jquery.fancybox-1.3.4.js

5633 ms

jqBootstrapValidation.js

jqBootstrapValidation.js

14030 ms

jquery.SuperSlide.2.1.js

jquery.SuperSlide.2.1.js

8923 ms

fly.js

fly.js

7117 ms

timedown.js

timedown.js

8176 ms

gdt.php

gdt.php

17216 ms

web.js

web.js

7100 ms

jquery.gallery.js

jquery.gallery.js

13241 ms

conversion.js

conversion.js

65 ms

script

script

819 ms

analytics.js

analytics.js

157 ms

logo_07.png

logo_07.png

1023 ms

new.png

new.png

564 ms

video1.jpg

video1.jpg

5605 ms

video2.jpg

video2.jpg

10225 ms

video4.jpg

video4.jpg

4752 ms

video3.jpg

video3.jpg

2268 ms

20150716_06.png

20150716_06.png

1623 ms

20150716_03.png

20150716_03.png

1411 ms

20150716_10.png

20150716_10.png

2262 ms

20150716_12.png

20150716_12.png

5171 ms

20150716_17.png

20150716_17.png

8924 ms

20150716_19.png

20150716_19.png

4450 ms

20150716_27.png

20150716_27.png

8653 ms

20150716_24.png

20150716_24.png

18896 ms

20150716_31.png

20150716_31.png

7970 ms

20150716_33.png

20150716_33.png

18826 ms

1.jpg

1.jpg

19977 ms

2.jpg

2.jpg

18744 ms

3.jpg

3.jpg

19977 ms

4.jpg

4.jpg

19976 ms

5.jpg

5.jpg

19977 ms

6.jpg

6.jpg

19977 ms

7.jpg

7.jpg

19977 ms

8.jpg

8.jpg

19978 ms

9.jpg

9.jpg

19977 ms

10.jpg

10.jpg

19977 ms

11.jpg

11.jpg

19978 ms

12.jpg

12.jpg

19977 ms

13.jpg

13.jpg

19977 ms

14.jpg

14.jpg

19977 ms

15.jpg

15.jpg

19977 ms

16.jpg

16.jpg

19976 ms

17.jpg

17.jpg

19976 ms

18.jpg

18.jpg

19976 ms

19.jpg

19.jpg

19976 ms

index.php

index.php

2383 ms

20.jpg

20.jpg

19954 ms

587 ms

hm.js

hm.js

1606 ms

collect

collect

51 ms

collect

collect

743 ms

21.jpg

21.jpg

20420 ms

213 ms

ga-audiences

ga-audiences

102 ms

22.jpg

22.jpg

19961 ms

23.jpg

23.jpg

19570 ms

24.jpg

24.jpg

20359 ms

hm.gif

hm.gif

386 ms

25.jpg

25.jpg

19649 ms

26.jpg

26.jpg

19715 ms

yk_iframe_register.css

yk_iframe_register.css

497 ms

jquery-1.8.3.js

jquery-1.8.3.js

19583 ms

jqBootstrapValidation.js

jqBootstrapValidation.js

3448 ms

pop.css

pop.css

1000 ms

jquery.pop.js

jquery.pop.js

1002 ms

27.jpg

27.jpg

19528 ms

bottom-logo.png

bottom-logo.png

17483 ms

play.png

play.png

17155 ms

green_03.gif

green_03.gif

17080 ms

number2.png

number2.png

15612 ms

lesson_15.png

lesson_15.png

16333 ms

lesson_16.png

lesson_16.png

13937 ms

zxk.jpg

zxk.jpg

19769 ms

rebg.jpg

rebg.jpg

19987 ms

register_06.png

register_06.png

9548 ms

register_03.png

register_03.png

10702 ms

collect

collect

61 ms

Accessibility Review

apelearn.com accessibility score

76

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

apelearn.com best practices score

58

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

High

Browser errors were logged to the console

SEO Factors

apelearn.com SEO score

58

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

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Apelearn.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed English language. Our system also found out that Apelearn.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

apelearn.com

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