Tools & Wizards About Us
proftnj.com screenshot

Report Summary

  • 68

    Performance

    Renders faster than
    80% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 29% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

proftnj.com

Prof TNJ: cours de sciences pour les 12-16 ans.

Page Load Speed

2.3 sec in total

First Response

380 ms

Resources Loaded

1.8 sec

Page Rendered

174 ms

proftnj.com screenshot

About Website

Visit proftnj.com now to see the best up-to-date Prof TNJ content for France and also check out these interesting facts you probably never knew about proftnj.com

Cours de sciences du prof TNJ: niveau 12-16 ans. Chimie, biologie et physique. Exposés, exercices, expériences et animations interactives. Liens vers des sites semblables ou complémentaires.

Visit proftnj.com

Key Findings

We analyzed Proftnj.com page load time and found that the first response time was 380 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

proftnj.com performance score

68

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

86/100

10%

LCP (Largest Contentful Paint)

Value3.8 s

54/100

25%

SI (Speed Index)

Value2.4 s

98/100

10%

TBT (Total Blocking Time)

Value490 ms

59/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value9.2 s

32/100

10%

Network Requests Diagram

proftnj.com

380 ms

styletnj.css

215 ms

plusone.js

16 ms

code.php

296 ms

news-js.php

31 ms

Our browser made a total of 82 requests to load all elements on the main page. We found that 24% of them (20 requests) were addressed to the original Proftnj.com, 12% (10 requests) were made to Laura.proftnj.com and 7% (6 requests) were made to Apis.google.com. The less responsive or slowest element that took the longest time to load (569 ms) relates to the external source Laura.proftnj.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 152.3 kB (38%)

Content Size

400.2 kB

After Optimization

247.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Proftnj.com main page is 400.2 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. 30% of websites need less resources to load. Javascripts take 255.9 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 29.6 kB

  • Original 41.9 kB
  • After minification 38.5 kB
  • After compression 12.3 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 29.6 kB or 71% of the original size.

Image Optimization

-80%

Potential reduce by 76.7 kB

  • Original 96.4 kB
  • After minification 19.7 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, Prof TNJ needs image optimization as it can save up to 76.7 kB or 80% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-16%

Potential reduce by 40.9 kB

  • Original 255.9 kB
  • After minification 255.8 kB
  • After compression 215.0 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 40.9 kB or 16% of the original size.

CSS Optimization

-84%

Potential reduce by 5.0 kB

  • Original 6.0 kB
  • After minification 4.6 kB
  • After compression 971 B

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. Proftnj.com needs all CSS files to be minified and compressed as it can save up to 5.0 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (44%)

Requests Now

63

After Optimization

35

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Prof TNJ. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

proftnj.com

proftnj.com

380 ms

styletnj.css

styletnj.css

215 ms

plusone.js

plusone.js

16 ms

code.php

code.php

296 ms

news-js.php

news-js.php

31 ms

laura10.js

laura10.js

217 ms

laura11.js

laura11.js

318 ms

Tracer.js

Tracer.js

26 ms

news-js.php

news-js.php

136 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

24 ms

profico.gif

profico.gif

293 ms

logohp1.gif

logohp1.gif

34 ms

axad.php

axad.php

386 ms

06478.gif

06478.gif

247 ms

7search7.gif

7search7.gif

349 ms

link-button3.gif

link-button3.gif

549 ms

wb_bouton_007.gif

wb_bouton_007.gif

176 ms

forumactif_88x31.gif

forumactif_88x31.gif

33 ms

badge80x30.png

badge80x30.png

132 ms

fdclair1.gif

fdclair1.gif

111 ms

bannerbleu.png

bannerbleu.png

403 ms

alien.jpg

alien.jpg

209 ms

googlemini.png

googlemini.png

213 ms

earthmini.png

earthmini.png

214 ms

proficoa.gif

proficoa.gif

221 ms

pagerank04.gif

pagerank04.gif

292 ms

vcss.gif

vcss.gif

312 ms

proftnjmini.gif

proftnjmini.gif

318 ms

jivenrollmini.png

jivenrollmini.png

320 ms

proficoa.gif

proficoa.gif

397 ms

tsnet.gif

tsnet.gif

495 ms

logocherchec.gif

logocherchec.gif

495 ms

log2kani.gif

log2kani.gif

505 ms

forumactif_88x31.gif

forumactif_88x31.gif

277 ms

show.php

show.php

385 ms

counter.php

counter.php

206 ms

10_preview.gif

10_preview.gif

226 ms

10_stat.gif

10_stat.gif

231 ms

small.js

small.js

21 ms

fdclair2.gif

fdclair2.gif

112 ms

like.php

like.php

421 ms

jeucomb.gif

jeucomb.gif

266 ms

bizill02.gif

bizill02.gif

353 ms

j2arc.gif

j2arc.gif

464 ms

j2dinkys.gif

j2dinkys.gif

457 ms

j3journal.gif

j3journal.gif

463 ms

j3bo.gif

j3bo.gif

472 ms

j3fox.gif

j3fox.gif

477 ms

j5morp.gif

j5morp.gif

476 ms

bizisom.gif

bizisom.gif

551 ms

indhover.gif

indhover.gif

569 ms

axad.php

axad.php

109 ms

06478.gif

06478.gif

68 ms

wb_bouton_007.gif

wb_bouton_007.gif

22 ms

p

p

113 ms

cW3meOZ7Or3POyab7jrHcU.js

cW3meOZ7Or3POyab7jrHcU.js

55 ms

cb=gapi.loaded_1

cb=gapi.loaded_1

19 ms

fastbutton

fastbutton

27 ms

242 ms

69 ms

postmessageRelay

postmessageRelay

48 ms

developers.google.com

developers.google.com

410 ms

3604799710-postmessagerelay.js

3604799710-postmessagerelay.js

25 ms

rpc:shindig_random.js

rpc:shindig_random.js

13 ms

tc.js

tc.js

40 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

4 ms

v2

v2

127 ms

192 ms

tag.min.js

tag.min.js

16 ms

219 ms

28 ms

generic

generic

12 ms

generic

generic

3 ms

652047674003958650

652047674003958650

3 ms

generic

generic

3 ms

405716.gif

405716.gif

68 ms

v2

v2

10 ms

27519

27519

172 ms

mapuid

mapuid

58 ms

v76lAv4LtsP.js

v76lAv4LtsP.js

26 ms

FEppCFCt76d.png

FEppCFCt76d.png

36 ms

lt.min.js

lt.min.js

17 ms

Accessibility Review

proftnj.com accessibility score

64

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

Best Practices

proftnj.com best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

proftnj.com SEO score

69

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    LA

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Proftnj.com can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Latin. Our system also found out that Proftnj.com main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

proftnj.com

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