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Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 81

    SEO

    Google-friendlier than
    42% of websites

codecademy.knoji.com

Codecademy Review | Codecademy.com Ratings & Customer Reviews – Oct '24

Page Load Speed

1.5 sec in total

First Response

415 ms

Resources Loaded

879 ms

Page Rendered

168 ms

codecademy.knoji.com screenshot

About Website

Click here to check amazing Codecademy Knoji content for United States. Otherwise, check out these important facts you probably never knew about codecademy.knoji.com

Codecademy reviews and Codecademy.com customer ratings for October 2024. Codecademy is a very popular online coding school store which competes against other online coding school stores like FreeCodeC...

Visit codecademy.knoji.com

Key Findings

We analyzed Codecademy.knoji.com page load time and found that the first response time was 415 ms and then it took 1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

codecademy.knoji.com performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.4 s

6/100

10%

LCP (Largest Contentful Paint)

Value6.0 s

13/100

25%

SI (Speed Index)

Value5.7 s

52/100

10%

TBT (Total Blocking Time)

Value1,270 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0.266

46/100

15%

TTI (Time to Interactive)

Value8.9 s

34/100

10%

Network Requests Diagram

codecademy.knoji.com

415 ms

fontawesome_css_all.min-br.css

70 ms

knoji-css.min.css

135 ms

common.css

133 ms

css

82 ms

Our browser made a total of 22 requests to load all elements on the main page. We found that 5% of them (1 request) were addressed to the original Codecademy.knoji.com, 55% (12 requests) were made to Knoji.com and 9% (2 requests) were made to Code.jquery.com. The less responsive or slowest element that took the longest time to load (429 ms) relates to the external source Knoji.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 117.7 kB (51%)

Content Size

231.4 kB

After Optimization

113.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Codecademy.knoji.com main page is 231.4 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. 20% of websites need less resources to load. HTML takes 125.4 kB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 111.1 kB

  • Original 125.4 kB
  • After minification 94.8 kB
  • After compression 14.4 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 30.6 kB, which is 24% 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 111.1 kB or 89% of the original size.

Image Optimization

-12%

Potential reduce by 4.4 kB

  • Original 37.2 kB
  • After minification 32.8 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. Obviously, Codecademy Knoji needs image optimization as it can save up to 4.4 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

-0%

Potential reduce by 97 B

  • Original 23.7 kB
  • After minification 23.7 kB
  • After compression 23.7 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.

CSS Optimization

-5%

Potential reduce by 2.1 kB

  • Original 45.0 kB
  • After minification 45.0 kB
  • After compression 42.9 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. Codecademy.knoji.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 16 (76%)

Requests Now

21

After Optimization

5

  • Images
  • JavaScript
  • CSS

The browser has sent 21 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Codecademy Knoji. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

codecademy.knoji.com

codecademy.knoji.com

415 ms

fontawesome_css_all.min-br.css

fontawesome_css_all.min-br.css

70 ms

knoji-css.min.css

knoji-css.min.css

135 ms

common.css

common.css

133 ms

css

css

82 ms

jquery-3.6.0.min.js

jquery-3.6.0.min.js

69 ms

clipboard.min.js

clipboard.min.js

429 ms

jquery-ui.min.js

jquery-ui.min.js

78 ms

jquery.min.js

jquery.min.js

106 ms

common.min.js

common.min.js

160 ms

froala_editor.pkgd.min.css

froala_editor.pkgd.min.css

102 ms

froala_style.min.css

froala_style.min.css

161 ms

embedly.min.css

embedly.min.css

161 ms

platform.js

platform.js

92 ms

froala_editor.pkgd.min.js

froala_editor.pkgd.min.js

236 ms

embedly.min.js

embedly.min.js

168 ms

js

js

95 ms

pinit.js

pinit.js

65 ms

0116.js

0116.js

81 ms

codecademy.jpg

codecademy.jpg

126 ms

logo34.png

logo34.png

125 ms

top-programming-languages-thumb.jpg

top-programming-languages-thumb.jpg

124 ms

Accessibility Review

codecademy.knoji.com accessibility score

72

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

codecademy.knoji.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

codecademy.knoji.com SEO score

81

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Codecademy.knoji.com 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 Codecademy.knoji.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

codecademy.knoji.com

Open Graph data is detected on the main page of Codecademy Knoji. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: