Tools & Wizards About Us
lumiere.ens.fr screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

lumiere.ens.fr

Homepage : DEC Département d'études cognitives

Page Load Speed

6.1 sec in total

First Response

331 ms

Resources Loaded

5.1 sec

Page Rendered

766 ms

lumiere.ens.fr screenshot

About Website

Welcome to lumiere.ens.fr homepage info - get ready to check Lumiere Ens best content for France right away, or after learning these important things about lumiere.ens.fr

Les sciences cognitives s'intéressent aux grandes fonctions mentales comme la perception, la mémoire, le raisonnement, le langage, les émotions, la motricité, la prise de décision.

Visit lumiere.ens.fr

Key Findings

We analyzed Lumiere.ens.fr page load time and found that the first response time was 331 ms and then it took 5.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

lumiere.ens.fr performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value14.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value28.5 s

0/100

25%

SI (Speed Index)

Value19.3 s

0/100

10%

TBT (Total Blocking Time)

Value1,810 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value31.3 s

0/100

10%

Network Requests Diagram

www.cognition.ens.fr

331 ms

cognition.ens.fr

425 ms

en

156 ms

en

177 ms

ajax-progress.module.css

152 ms

Our browser made a total of 175 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Lumiere.ens.fr, 10% (18 requests) were made to Use.typekit.net and 6% (11 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (1 sec) relates to the external source Syndication.twitter.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 543.9 kB (33%)

Content Size

1.7 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lumiere.ens.fr main page is 1.7 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 932.6 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 65.8 kB

  • Original 81.0 kB
  • After minification 76.9 kB
  • After compression 15.2 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 65.8 kB or 81% of the original size.

Image Optimization

-10%

Potential reduce by 91.1 kB

  • Original 932.6 kB
  • After minification 841.5 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. Lumiere Ens images are well optimized though.

JavaScript Optimization

-32%

Potential reduce by 75.3 kB

  • Original 234.1 kB
  • After minification 234.0 kB
  • After compression 158.7 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 75.3 kB or 32% of the original size.

CSS Optimization

-76%

Potential reduce by 311.7 kB

  • Original 411.3 kB
  • After minification 409.5 kB
  • After compression 99.6 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. Lumiere.ens.fr needs all CSS files to be minified and compressed as it can save up to 311.7 kB or 76% of the original size.

Requests Breakdown

Number of requests can be reduced by 129 (84%)

Requests Now

153

After Optimization

24

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 153 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lumiere Ens. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 48 to 1 for JavaScripts and from 76 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.cognition.ens.fr

www.cognition.ens.fr

331 ms

cognition.ens.fr

cognition.ens.fr

425 ms

en

en

156 ms

en

en

177 ms

ajax-progress.module.css

ajax-progress.module.css

152 ms

align.module.css

align.module.css

230 ms

autocomplete-loading.module.css

autocomplete-loading.module.css

233 ms

fieldgroup.module.css

fieldgroup.module.css

236 ms

container-inline.module.css

container-inline.module.css

237 ms

clearfix.module.css

clearfix.module.css

235 ms

details.module.css

details.module.css

238 ms

hidden.module.css

hidden.module.css

306 ms

item-list.module.css

item-list.module.css

311 ms

js.module.css

js.module.css

313 ms

nowrap.module.css

nowrap.module.css

314 ms

position-container.module.css

position-container.module.css

312 ms

progress.module.css

progress.module.css

316 ms

reset-appearance.module.css

reset-appearance.module.css

383 ms

resize.module.css

resize.module.css

386 ms

sticky-header.module.css

sticky-header.module.css

388 ms

system-status-counter.css

system-status-counter.css

389 ms

system-status-report-counters.css

system-status-report-counters.css

389 ms

system-status-report-general-info.css

system-status-report-general-info.css

392 ms

tabledrag.module.css

tabledrag.module.css

459 ms

tablesort.module.css

tablesort.module.css

463 ms

tree-child.module.css

tree-child.module.css

464 ms

core.css

core.css

467 ms

datepicker.css

datepicker.css

466 ms

cookiesjsr.min.css

cookiesjsr.min.css

469 ms

views.module.css

views.module.css

536 ms

addtoany.css

addtoany.css

539 ms

theme.css

theme.css

542 ms

base.css

base.css

544 ms

layouts.css

layouts.css

545 ms

action-links.css

action-links.css

547 ms

collapse-processed.css

collapse-processed.css

613 ms

container-inline.css

container-inline.css

614 ms

details.css

details.css

619 ms

exposed-filters.css

exposed-filters.css

621 ms

jrj0xnd.js

jrj0xnd.js

124 ms

widgets.js

widgets.js

90 ms

page.js

page.js

29 ms

field.css

field.css

556 ms

form.css

form.css

481 ms

icons.css

icons.css

472 ms

inline-form.css

inline-form.css

467 ms

item-list.css

item-list.css

467 ms

link.css

link.css

469 ms

links.css

links.css

469 ms

menu.css

menu.css

470 ms

tabledrag.css

tabledrag.css

470 ms

tableselect.css

tableselect.css

467 ms

tablesort.css

tablesort.css

466 ms

textarea.css

textarea.css

470 ms

ui-dialog.css

ui-dialog.css

468 ms

messages.css

messages.css

472 ms

clearfix.css

clearfix.css

471 ms

visually-hidden.css

visually-hidden.css

467 ms

box.css

box.css

467 ms

comment.css

comment.css

470 ms

header.css

header.css

467 ms

hidden.css

hidden.css

474 ms

inline-links.css

inline-links.css

470 ms

inline-sibling.css

inline-sibling.css

468 ms

print-none.css

print-none.css

468 ms

responsive-video.css

responsive-video.css

469 ms

autocomplete.css

autocomplete.css

471 ms

collapsible-fieldset.css

collapsible-fieldset.css

470 ms

form-item.css

form-item.css

468 ms

form-table.css

form-table.css

466 ms

progress-bar.css

progress-bar.css

466 ms

progress-throbber.css

progress-throbber.css

465 ms

resizable-textarea.css

resizable-textarea.css

471 ms

table-drag.css

table-drag.css

469 ms

nav-menu.css

nav-menu.css

468 ms

navbar.css

navbar.css

465 ms

pager.css

pager.css

468 ms

footer.css

footer.css

470 ms

skip-link.css

skip-link.css

474 ms

jquery-ui.css

jquery-ui.css

468 ms

style.css

style.css

471 ms

dec-style.css

dec-style.css

465 ms

jquery.min.js

jquery.min.js

594 ms

drupalSettingsLoader.js

drupalSettingsLoader.js

583 ms

drupal.js

drupal.js

581 ms

drupal.init.js

drupal.init.js

515 ms

data-min.js

data-min.js

515 ms

disable-selection-min.js

disable-selection-min.js

516 ms

form-min.js

form-min.js

512 ms

labels-min.js

labels-min.js

513 ms

jquery-1-7-min.js

jquery-1-7-min.js

563 ms

scroll-parent-min.js

scroll-parent-min.js

494 ms

tabbable-min.js

tabbable-min.js

496 ms

unique-id-min.js

unique-id-min.js

498 ms

version-min.js

version-min.js

518 ms

escape-selector-min.js

escape-selector-min.js

517 ms

focusable-min.js

focusable-min.js

542 ms

ie-min.js

ie-min.js

478 ms

keycode-min.js

keycode-min.js

481 ms

plugin-min.js

plugin-min.js

480 ms

safe-active-element-min.js

safe-active-element-min.js

517 ms

safe-blur-min.js

safe-blur-min.js

516 ms

addtoany.js

addtoany.js

541 ms

locale.datepicker.js

locale.datepicker.js

476 ms

datepicker-min.js

datepicker-min.js

476 ms

labo.js

labo.js

475 ms

jquery-ui.js

jquery-ui.js

930 ms

cookies_addtoany.js

cookies_addtoany.js

517 ms

debounce.js

debounce.js

541 ms

announce.js

announce.js

475 ms

message.js

message.js

475 ms

cookiesjsr.conf.js

cookiesjsr.conf.js

475 ms

cookiesjsr-preloader.min.js

cookiesjsr-preloader.min.js

567 ms

ZosOBZFt_tg

ZosOBZFt_tg

369 ms

fl-down-white.png

fl-down-white.png

719 ms

logo-ens.png

logo-ens.png

720 ms

logo-dec.png

logo-dec.png

719 ms

menu-hamburger.png

menu-hamburger.png

720 ms

menu-expanded.png

menu-expanded.png

660 ms

ico-search.png

ico-search.png

680 ms

ico-intranet.png

ico-intranet.png

676 ms

P1070760.JPG

P1070760.JPG

679 ms

NUITDELENS%20copie.png

NUITDELENS%20copie.png

682 ms

Capture%20d%E2%80%99%C3%A9cran%202022-07-12%20%C3%A0%2010.30.01.png

Capture%20d%E2%80%99%C3%A9cran%202022-07-12%20%C3%A0%2010.30.01.png

845 ms

Capture%20d%E2%80%99e%CC%81cran%202022-06-14%20a%CC%80%2017.26.39.png

Capture%20d%E2%80%99e%CC%81cran%202022-06-14%20a%CC%80%2017.26.39.png

673 ms

Capture%20d%E2%80%99e%CC%81cran%202022-06-14%20a%CC%80%2017.08.27.png

Capture%20d%E2%80%99e%CC%81cran%202022-06-14%20a%CC%80%2017.08.27.png

678 ms

DECLife_0.png

DECLife_0.png

792 ms

BUDDYP_0.png

BUDDYP_0.png

624 ms

DECNews.png

DECNews.png

625 ms

EXPESCIENCES%20copie.png

EXPESCIENCES%20copie.png

787 ms

Jaures.png

Jaures.png

953 ms

FCOG.png

FCOG.png

790 ms

logo-ens.png

logo-ens.png

762 ms

logo-psl.png

logo-psl.png

756 ms

ico-gps.png

ico-gps.png

752 ms

www-player.css

www-player.css

14 ms

www-embed-player.js

www-embed-player.js

45 ms

base.js

base.js

77 ms

fetch-polyfill.js

fetch-polyfill.js

10 ms

bfHUaTEyd1--op9bahaZLY-rNTEZ9idqhQ9UR8uPyGw.js

bfHUaTEyd1--op9bahaZLY-rNTEZ9idqhQ9UR8uPyGw.js

252 ms

embed.js

embed.js

202 ms

widget_iframe.9d00f3a022654eb8edfbc3190e981f9d.html

widget_iframe.9d00f3a022654eb8edfbc3190e981f9d.html

194 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

212 ms

d

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168 ms

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167 ms

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276 ms

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274 ms

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209 ms

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198 ms

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209 ms

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200 ms

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273 ms

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319 ms

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273 ms

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335 ms

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363 ms

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364 ms

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412 ms

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361 ms

Create

Create

177 ms

settings

settings

223 ms

horizon_timeline.08c300ab95020b1109a05214ccb84dea.js

horizon_timeline.08c300ab95020b1109a05214ccb84dea.js

22 ms

embeds

embeds

89 ms

p.gif

p.gif

36 ms

Cognition_ENS

Cognition_ENS

1013 ms

GenerateIT

GenerateIT

13 ms

polyfills-57d3feabe8bfd4ee389c.js

polyfills-57d3feabe8bfd4ee389c.js

25 ms

runtime-d2ba011899a8bc832546.js

runtime-d2ba011899a8bc832546.js

49 ms

modules.c7def0268c66f6a548ed.js

modules.c7def0268c66f6a548ed.js

98 ms

main-e9db78f5e7b3d83edd5e.js

main-e9db78f5e7b3d83edd5e.js

91 ms

_app-f921177a8618779237dd.js

_app-f921177a8618779237dd.js

99 ms

%5BscreenName%5D-18c5091b9b3426f0194f.js

%5BscreenName%5D-18c5091b9b3426f0194f.js

101 ms

_buildManifest.js

_buildManifest.js

103 ms

_ssgManifest.js

_ssgManifest.js

112 ms

Accessibility Review

lumiere.ens.fr accessibility score

98

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.

Best Practices

lumiere.ens.fr best practices score

75

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

Missing source maps for large first-party JavaScript

SEO Factors

lumiere.ens.fr SEO score

98

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 Lumiere.ens.fr 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 Lumiere.ens.fr 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

lumiere.ens.fr

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