Tools & Wizards About Us
cersat.ifremer.fr screenshot

Report Summary

  • 58

    Performance

    Renders faster than
    74% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 69% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

cersat.ifremer.fr

CERSAT

Page Load Speed

48.1 sec in total

First Response

2.5 sec

Resources Loaded

44.7 sec

Page Rendered

914 ms

cersat.ifremer.fr screenshot

About Website

Visit cersat.ifremer.fr now to see the best up-to-date CERSAT Ifremer content for France and also check out these interesting facts you probably never knew about cersat.ifremer.fr

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Key Findings

We analyzed Cersat.ifremer.fr page load time and found that the first response time was 2.5 sec and then it took 45.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

cersat.ifremer.fr performance score

58

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

69/100

10%

LCP (Largest Contentful Paint)

Value14.0 s

0/100

25%

SI (Speed Index)

Value6.8 s

34/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value9.7 s

28/100

10%

Network Requests Diagram

cersat.ifremer.fr

2471 ms

jquery.min.js

607 ms

modal.css

222 ms

style.css

223 ms

typo.css

344 ms

Our browser made a total of 130 requests to load all elements on the main page. We found that 95% of them (124 requests) were addressed to the original Cersat.ifremer.fr, 2% (2 requests) were made to Google-analytics.com and 2% (2 requests) were made to Ifremer.fr. The less responsive or slowest element that took the longest time to load (18.9 sec) belongs to the original domain Cersat.ifremer.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 959.4 kB (23%)

Content Size

4.2 MB

After Optimization

3.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cersat.ifremer.fr main page is 4.2 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. 55% of websites need less resources to load. Images take 3.2 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 98.5 kB

  • Original 116.2 kB
  • After minification 112.4 kB
  • After compression 17.7 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 98.5 kB or 85% of the original size.

Image Optimization

-6%

Potential reduce by 193.8 kB

  • Original 3.2 MB
  • After minification 3.0 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. CERSAT Ifremer images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 445.8 kB

  • Original 646.3 kB
  • After minification 620.4 kB
  • After compression 200.5 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 445.8 kB or 69% of the original size.

CSS Optimization

-85%

Potential reduce by 221.3 kB

  • Original 259.7 kB
  • After minification 180.8 kB
  • After compression 38.4 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. Cersat.ifremer.fr needs all CSS files to be minified and compressed as it can save up to 221.3 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 59 (46%)

Requests Now

129

After Optimization

70

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 129 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CERSAT Ifremer. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 26 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

cersat.ifremer.fr

cersat.ifremer.fr

2471 ms

jquery.min.js

jquery.min.js

607 ms

modal.css

modal.css

222 ms

style.css

style.css

223 ms

typo.css

typo.css

344 ms

style.css

style.css

224 ms

jcemediabox.css

jcemediabox.css

326 ms

style.css

style.css

335 ms

system.css

system.css

339 ms

general.css

general.css

342 ms

style.portal.mode.1.css

style.portal.mode.1.css

449 ms

camera.css

camera.css

460 ms

style.css

style.css

463 ms

addons.css

addons.css

471 ms

layout.css

layout.css

471 ms

template.css

template.css

591 ms

usertools.css

usertools.css

764 ms

css3.css

css3.css

2233 ms

mega.css

mega.css

760 ms

k2.css

k2.css

778 ms

typo.css

typo.css

760 ms

layout.css

layout.css

774 ms

template.css

template.css

855 ms

css3.css

css3.css

782 ms

mega.css

mega.css

847 ms

template.css

template.css

844 ms

mootools-core.js

mootools-core.js

1629 ms

core.js

core.js

871 ms

mootools-more.js

mootools-more.js

5597 ms

modal.js

modal.js

980 ms

jquery.min.js

jquery.min.js

80 ms

k2.js

k2.js

971 ms

script.js

script.js

998 ms

caption.js

caption.js

2172 ms

swfobject.js

swfobject.js

1599 ms

jsn_is_extultils.js

jsn_is_extultils.js

1132 ms

jsn_is_imageshow.js

jsn_is_imageshow.js

1272 ms

css

css

76 ms

jcemediabox.js

jcemediabox.js

1385 ms

core.js

core.js

1514 ms

ja.firstword.js

ja.firstword.js

1544 ms

mega.js

mega.js

1671 ms

engine.portal.mode.1.js

engine.portal.mode.1.js

1543 ms

jquery.easing.1.3.js

jquery.easing.1.3.js

1553 ms

camera.min.js

camera.min.js

1673 ms

engine.js

engine.js

1695 ms

ja.rightcol.js

ja.rightcol.js

1679 ms

equalheights.js

equalheights.js

2001 ms

system.css

system.css

1714 ms

ga.js

ga.js

403 ms

128-121.jpg

128-121.jpg

344 ms

header3.jpg

header3.jpg

582 ms

grad1-mask.png

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335 ms

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324 ms

arrow4.png

arrow4.png

332 ms

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461 ms

science.jpg

science.jpg

335 ms

data.jpg

data.jpg

475 ms

projects.jpg

projects.jpg

476 ms

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490 ms

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555 ms

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News.events.obidamnsp_107.jpg

672 ms

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675 ms

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765 ms

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681 ms

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846 ms

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849 ms

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857 ms

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858 ms

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860 ms

k2.items.cache.0e09527b0f5edaa60cf5702119e6a0a2_Lnsp_107.jpg

k2.items.cache.0e09527b0f5edaa60cf5702119e6a0a2_Lnsp_107.jpg

980 ms

k2.items.cache.13f34e2b533e12c6166f88368dcd8c07_Lnsp_107.jpg

k2.items.cache.13f34e2b533e12c6166f88368dcd8c07_Lnsp_107.jpg

1075 ms

k2.items.cache.aaa082d2257ab65aecf61c2340e9c5b9_Lnsp_107.jpg

k2.items.cache.aaa082d2257ab65aecf61c2340e9c5b9_Lnsp_107.jpg

1192 ms

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k2.items.cache.924e149af069b8ea323a809fbb1171d4_Lnsp_107.jpg

1089 ms

k2.items.cache.e44a6f32e15cb53ee479b2697e759e2e_Lnsp_107.jpg

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1206 ms

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1092 ms

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1208 ms

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1510 ms

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1509 ms

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1510 ms

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1511 ms

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k2.items.cache.8b072d4f47fa16702f8c7356d2c88ee8_Lnsp_107.jpg

1504 ms

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1503 ms

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1499 ms

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1501 ms

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k2.items.cache.fb5c27012bf7bd2b528a5fe03304bd91_Lnsp_107.jpg

1225 ms

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News.Calibration.asar_spectransp_107.gif

1226 ms

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1234 ms

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1310 ms

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1409 ms

__utm.gif

__utm.gif

129 ms

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1285 ms

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1173 ms

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1269 ms

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1259 ms

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1182 ms

GlobWave-logo_64.png

GlobWave-logo_64.png

1191 ms

Medspiration-logo_64.png

Medspiration-logo_64.png

1261 ms

piwik.js

piwik.js

698 ms

catds-logo_64.gif

catds-logo_64.gif

1170 ms

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logo_projet_oceanflux_ghg2.jpg.png

1175 ms

cnes.jpeg

cnes.jpeg

1169 ms

esa.jpeg

esa.jpeg

1087 ms

meteoFr.jpeg

meteoFr.jpeg

1015 ms

ue.jpeg

ue.jpeg

1099 ms

dot3.gif

dot3.gif

1093 ms

container-bg.gif

container-bg.gif

1094 ms

nausicaa_div.png

nausicaa_div.png

1311 ms

calypso_div3.png

calypso_div3.png

1085 ms

todaysdata_div.jpg

todaysdata_div.jpg

884 ms

indicators_div.jpg

indicators_div.jpg

971 ms

naiad_div.png

naiad_div.png

1071 ms

dot2.gif

dot2.gif

873 ms

interface.png

interface.png

872 ms

arrow.png

arrow.png

957 ms

piwik.php

piwik.php

4820 ms

popup.html

popup.html

674 ms

tooltip.html

tooltip.html

675 ms

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nsp_portal_mode_1_interface.png

681 ms

grad3.gif

grad3.gif

762 ms

camera_skins.png

camera_skins.png

862 ms

camera-loader.gif

camera-loader.gif

764 ms

big_wave.jpg

big_wave.jpg

2697 ms

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smos_view6_FINAL_H.jpg

3455 ms

blank.gif

blank.gif

449 ms

sst_3D_glob.jpg

sst_3D_glob.jpg

10341 ms

oceancolour-banner.jpg

oceancolour-banner.jpg

767 ms

SEAiCE5.jpeg

SEAiCE5.jpeg

18945 ms

server2.jpg

server2.jpg

5601 ms

K_co2.png

K_co2.png

11301 ms

Accessibility Review

cersat.ifremer.fr 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 input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

Links do not have a discernible name

Best Practices

cersat.ifremer.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

SEO Factors

cersat.ifremer.fr SEO score

76

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

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 Cersat.ifremer.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 Cersat.ifremer.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

cersat.ifremer.fr

Open Graph description is not detected on the main page of CERSAT Ifremer. 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: