Tools & Wizards About Us
learnshell.org screenshot

Report Summary

  • 52

    Performance

    Renders faster than
    69% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

learnshell.org

Learn Shell - Free Interactive Shell Tutorial

Page Load Speed

1.5 sec in total

First Response

70 ms

Resources Loaded

731 ms

Page Rendered

661 ms

learnshell.org screenshot

About Website

Visit learnshell.org now to see the best up-to-date Learn Shell content for India and also check out these interesting facts you probably never knew about learnshell.org

learnshell.org is a free interactive Shell tutorial for people who want to learn Shell, fast.

Visit learnshell.org

Key Findings

We analyzed Learnshell.org page load time and found that the first response time was 70 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

learnshell.org performance score

52

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

97/100

10%

LCP (Largest Contentful Paint)

Value2.6 s

88/100

25%

SI (Speed Index)

Value7.1 s

31/100

10%

TBT (Total Blocking Time)

Value2,770 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.012

100/100

15%

TTI (Time to Interactive)

Value12.7 s

13/100

10%

Network Requests Diagram

learnshell.org

70 ms

learnshell.org

69 ms

bootstrap.min.css

53 ms

codemirror.css

63 ms

xq-light-media.css

60 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 71% of them (29 requests) were addressed to the original Learnshell.org, 10% (4 requests) were made to Cdnjs.cloudflare.com and 5% (2 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (247 ms) relates to the external source Pagead2.googlesyndication.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 412.4 kB (13%)

Content Size

3.1 MB

After Optimization

2.7 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Learnshell.org main page is 3.1 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. 70% of websites need less resources to load. Images take 2.8 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 28.0 kB

  • Original 35.0 kB
  • After minification 28.4 kB
  • After compression 7.0 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 6.6 kB, which is 19% 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 28.0 kB or 80% of the original size.

Image Optimization

-14%

Potential reduce by 384.3 kB

  • Original 2.8 MB
  • After minification 2.4 MB

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, Learn Shell needs image optimization as it can save up to 384.3 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 127 B

  • Original 262.9 kB
  • After minification 262.9 kB
  • After compression 262.7 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.

Requests Breakdown

Number of requests can be reduced by 24 (65%)

Requests Now

37

After Optimization

13

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Learn Shell. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

learnshell.org

learnshell.org

70 ms

learnshell.org

learnshell.org

69 ms

bootstrap.min.css

bootstrap.min.css

53 ms

codemirror.css

codemirror.css

63 ms

xq-light-media.css

xq-light-media.css

60 ms

xq-dark-media.css

xq-dark-media.css

40 ms

prism-light.css

prism-light.css

75 ms

prism-dark.css

prism-dark.css

61 ms

learnpython.css

learnpython.css

62 ms

adsbygoogle.js

adsbygoogle.js

240 ms

jquery-1.12.4.min.js

jquery-1.12.4.min.js

36 ms

popper.min.js

popper.min.js

45 ms

prism.js

prism.js

108 ms

buttons.js

buttons.js

34 ms

all.min.css

all.min.css

58 ms

codemirror.js

codemirror.js

141 ms

matchbrackets.js

matchbrackets.js

106 ms

clike.js

clike.js

107 ms

xml.js

xml.js

105 ms

css.js

css.js

154 ms

htmlembedded.js

htmlembedded.js

140 ms

htmlmixed.js

htmlmixed.js

152 ms

bootstrap.min.js

bootstrap.min.js

156 ms

bootbox.min.js

bootbox.min.js

154 ms

learnpython.js

learnpython.js

153 ms

learnshell.org.ico

learnshell.org.ico

59 ms

icon20x24px-exported-transparent.png

icon20x24px-exported-transparent.png

59 ms

cfk-billboard.png

cfk-billboard.png

138 ms

promo_high.png

promo_high.png

231 ms

digital-ocean.svg

digital-ocean.svg

135 ms

spoj.png

spoj.png

137 ms

masterschool.png

masterschool.png

137 ms

cfk.png

cfk.png

138 ms

cfk-promo.png

cfk-promo.png

203 ms

analytics.js

analytics.js

147 ms

buttons.html

buttons.html

75 ms

fa-solid-900.woff

fa-solid-900.woff

96 ms

fa-regular-400.woff

fa-regular-400.woff

99 ms

show_ads_impl.js

show_ads_impl.js

247 ms

collect

collect

20 ms

js

js

52 ms

Accessibility Review

learnshell.org accessibility score

80

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

Best Practices

learnshell.org best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

learnshell.org SEO score

79

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Links do not have descriptive text

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Learnshell.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Learnshell.org 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

learnshell.org

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