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42.us.org screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 95

    SEO

    Google-friendlier than
    90% of websites

42.us.org

42 | Learn to Code. Break the Codes. Tuition-free Training.

Page Load Speed

3.9 sec in total

First Response

366 ms

Resources Loaded

2.5 sec

Page Rendered

1.1 sec

42.us.org screenshot

About Website

Welcome to 42.us.org homepage info - get ready to check 42 best content for United States right away, or after learning these important things about 42.us.org

42 is a future-proof computer science training to educate the next generation of software engineers. 42 takes a project-based approach.

Visit 42.us.org

Key Findings

We analyzed 42.us.org page load time and found that the first response time was 366 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

42.us.org performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value15.2 s

0/100

25%

SI (Speed Index)

Value13.6 s

2/100

10%

TBT (Total Blocking Time)

Value5,440 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.032

100/100

15%

TTI (Time to Interactive)

Value23.3 s

1/100

10%

Network Requests Diagram

366 ms

style.min.css

399 ms

myearth.css

247 ms

main.c170b05b9b237751b76d.css

636 ms

ableplayer.min.css

369 ms

Our browser made a total of 59 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original 42.us.org, 15% (9 requests) were made to Use.typekit.net and 3% (2 requests) were made to Apis.google.com. The less responsive or slowest element that took the longest time to load (912 ms) relates to the external source 42.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (38%)

Content Size

3.0 MB

After Optimization

1.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 42.us.org main page is 3.0 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 81.1 kB

  • Original 92.7 kB
  • After minification 59.1 kB
  • After compression 11.6 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. This page needs HTML code to be minified as it can gain 33.6 kB, which is 36% 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 81.1 kB or 87% of the original size.

Image Optimization

-6%

Potential reduce by 76.9 kB

  • Original 1.3 MB
  • After minification 1.2 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. 42 images are well optimized though.

JavaScript Optimization

-54%

Potential reduce by 666.0 kB

  • Original 1.2 MB
  • After minification 1.2 MB
  • After compression 576.1 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 666.0 kB or 54% of the original size.

CSS Optimization

-86%

Potential reduce by 316.8 kB

  • Original 368.5 kB
  • After minification 367.9 kB
  • After compression 51.7 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. 42.us.org needs all CSS files to be minified and compressed as it can save up to 316.8 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 21 (42%)

Requests Now

50

After Optimization

29

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 42. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

366 ms

style.min.css

style.min.css

399 ms

myearth.css

myearth.css

247 ms

main.c170b05b9b237751b76d.css

main.c170b05b9b237751b76d.css

636 ms

ableplayer.min.css

ableplayer.min.css

369 ms

miniature.earth.loader.js

miniature.earth.loader.js

289 ms

myearth.js

myearth.js

291 ms

jquery.min.js

jquery.min.js

484 ms

jquery-migrate.min.js

jquery-migrate.min.js

370 ms

regenerator-runtime.min.js

regenerator-runtime.min.js

372 ms

wp-polyfill.min.js

wp-polyfill.min.js

448 ms

hooks.min.js

hooks.min.js

450 ms

i18n.min.js

i18n.min.js

452 ms

main.c170b05b9b237751b76d.js

main.c170b05b9b237751b76d.js

654 ms

script.js

script.js

293 ms

client.js

client.js

32 ms

ableplayer.dist.js

ableplayer.dist.js

766 ms

wp-embed.min.js

wp-embed.min.js

325 ms

js.cookie.js

js.cookie.js

327 ms

hyk8orl.css

hyk8orl.css

81 ms

slick.min.css

slick.min.css

42 ms

p.css

p.css

25 ms

42-Final-sigle-seul.svg

42-Final-sigle-seul.svg

188 ms

REPORTAGE42_SD-2527-2000x1333.jpg

REPORTAGE42_SD-2527-2000x1333.jpg

905 ms

Rectangle.png

Rectangle.png

192 ms

teacher-white.svg

teacher-white.svg

189 ms

projects-white.svg

projects-white.svg

184 ms

peer-to-peer-white.svg

peer-to-peer-white.svg

340 ms

gamification.svg-white.svg

gamification.svg-white.svg

343 ms

REPORTAGE42_SD-2275-2000x1333.jpg

REPORTAGE42_SD-2275-2000x1333.jpg

346 ms

no-money-grey.svg

no-money-grey.svg

341 ms

certificate-grey.svg

certificate-grey.svg

340 ms

no-certificate-grey.svg

no-certificate-grey.svg

494 ms

programming-grey.svg

programming-grey.svg

497 ms

REPORTAGE42_SD-2586_filter-2000x1333.jpg

REPORTAGE42_SD-2586_filter-2000x1333.jpg

497 ms

L1018059-2000x1331.jpg

L1018059-2000x1331.jpg

526 ms

Bande-pixel-1-1.png

Bande-pixel-1-1.png

498 ms

World_map_blue_dots.svg

World_map_blue_dots.svg

912 ms

no-money.svg

no-money.svg

499 ms

gender-equality.svg

gender-equality.svg

501 ms

teacher.svg

teacher.svg

499 ms

international.svg

international.svg

530 ms

coin.svg

coin.svg

899 ms

programming.svg

programming.svg

901 ms

socialnetworks.svg

socialnetworks.svg

867 ms

d

d

147 ms

d

d

168 ms

d

d

170 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

146 ms

d

d

62 ms

d

d

135 ms

d

d

134 ms

d

d

134 ms

d

d

135 ms

Mask-1024x334.png

Mask-1024x334.png

759 ms

sdk.js

sdk.js

164 ms

65fd4c4f0f1ce65d5ff49443.json

65fd4c4f0f1ce65d5ff49443.json

39 ms

en.js

en.js

387 ms

en.js

en.js

387 ms

Accessibility Review

42.us.org accessibility score

88

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA IDs are not unique

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

42.us.org best practices score

83

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

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

42.us.org SEO score

95

Search Engine Optimization Advices

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 42.us.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 42.us.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

42.us.org

Open Graph data is detected on the main page of 42. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: