Tools & Wizards About Us
transcriptome.ens.fr screenshot

Report Summary

  • 57

    Performance

    Renders faster than
    74% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 48% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

transcriptome.ens.fr

GenomiqueENS

Page Load Speed

2.4 sec in total

First Response

260 ms

Resources Loaded

2 sec

Page Rendered

177 ms

transcriptome.ens.fr screenshot

About Website

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

GenomiqueENS est la plateforme génomique de l’Institut de Biologie de l’École normale supérieure (IBENS).

Visit transcriptome.ens.fr

Key Findings

We analyzed Transcriptome.ens.fr page load time and found that the first response time was 260 ms and then it took 2.1 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

transcriptome.ens.fr performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value9.2 s

1/100

25%

SI (Speed Index)

Value4.9 s

66/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.18

67/100

15%

TTI (Time to Interactive)

Value5.2 s

74/100

10%

Network Requests Diagram

transcriptome.ens.fr

260 ms

sgdb

429 ms

572 ms

platform_mac_ie5.css

160 ms

spacer.gif

90 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that all of those requests were addressed to Transcriptome.ens.fr and no external sources were called. The less responsive or slowest element that took the longest time to load (572 ms) belongs to the original domain Transcriptome.ens.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 21.6 kB (70%)

Content Size

30.7 kB

After Optimization

9.1 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Transcriptome.ens.fr main page is 30.7 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. Only 5% of websites need less resources to load. HTML takes 23.0 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 19.1 kB

  • Original 23.0 kB
  • After minification 20.8 kB
  • After compression 3.8 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 19.1 kB or 83% of the original size.

Image Optimization

-23%

Potential reduce by 1.5 kB

  • Original 6.5 kB
  • After minification 5.0 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, Transcriptome Ens needs image optimization as it can save up to 1.5 kB or 23% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-78%

Potential reduce by 951 B

  • Original 1.2 kB
  • After minification 1.1 kB
  • After compression 267 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. Transcriptome.ens.fr needs all CSS files to be minified and compressed as it can save up to 951 B or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 34 (65%)

Requests Now

52

After Optimization

18

  • Images
  • CSS

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Transcriptome Ens. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

transcriptome.ens.fr

transcriptome.ens.fr

260 ms

sgdb

sgdb

429 ms

572 ms

platform_mac_ie5.css

platform_mac_ie5.css

160 ms

spacer.gif

spacer.gif

90 ms

sgdb_logo.gif

sgdb_logo.gif

162 ms

sgdb_banner_en.gif

sgdb_banner_en.gif

241 ms

light_blue_background.gif

light_blue_background.gif

163 ms

sgdb_navigation_en.gif

sgdb_navigation_en.gif

165 ms

dark_blue_background.gif

dark_blue_background.gif

164 ms

menu_presentation_en.gif

menu_presentation_en.gif

187 ms

menu_principle_en.gif

menu_principle_en.gif

241 ms

menu_genopole_en.gif

menu_genopole_en.gif

241 ms

menu_people_en.gif

menu_people_en.gif

242 ms

menu_materials_en.gif

menu_materials_en.gif

243 ms

menu_function_en.gif

menu_function_en.gif

264 ms

menu_contact_en.gif

menu_contact_en.gif

319 ms

menu_communication_en.gif

menu_communication_en.gif

321 ms

menu_news_en.gif

menu_news_en.gif

322 ms

menu_jobs_en.gif

menu_jobs_en.gif

325 ms

menu_training_en.gif

menu_training_en.gif

325 ms

menu_forum_en.gif

menu_forum_en.gif

342 ms

menu_publications_en.gif

menu_publications_en.gif

396 ms

menu_services_en.gif

menu_services_en.gif

399 ms

menu_reservation_en.gif

menu_reservation_en.gif

398 ms

menu_hybana_en.gif

menu_hybana_en.gif

400 ms

menu_protocol_en.gif

menu_protocol_en.gif

401 ms

menu_preparation_en.gif

menu_preparation_en.gif

420 ms

menu_labelling_en.gif

menu_labelling_en.gif

474 ms

menu_hybridisation_en.gif

menu_hybridisation_en.gif

474 ms

menu_production_en.gif

menu_production_en.gif

474 ms

menu_analysis_en.gif

menu_analysis_en.gif

475 ms

menu_images_en.gif

menu_images_en.gif

476 ms

menu_excel_en.gif

menu_excel_en.gif

497 ms

menu_normalization_en.gif

menu_normalization_en.gif

552 ms

menu_pretreatment_en.gif

menu_pretreatment_en.gif

551 ms

menu_differential_en.gif

menu_differential_en.gif

552 ms

menu_clustering_en.gif

menu_clustering_en.gif

553 ms

menu_data_mining_en.gif

menu_data_mining_en.gif

555 ms

menu_sgdb_en.gif

menu_sgdb_en.gif

496 ms

menu_faq_en.gif

menu_faq_en.gif

534 ms

menu_faq_protocol_en.gif

menu_faq_protocol_en.gif

478 ms

menu_faq_web_en.gif

menu_faq_web_en.gif

478 ms

menu_access_en.gif

menu_access_en.gif

476 ms

menu_session_en.gif

menu_session_en.gif

479 ms

logo_arrayplot_75.gif

logo_arrayplot_75.gif

478 ms

logo_ymgv_75.gif

logo_ymgv_75.gif

556 ms

logo_ytafnet_75.gif

logo_ytafnet_75.gif

478 ms

logo_micovito_75.gif

logo_micovito_75.gif

556 ms

logo_gepas_75.gif

logo_gepas_75.gif

478 ms

logo_doelan_75.png

logo_doelan_75.png

479 ms

logo_goulphar.gif

logo_goulphar.gif

477 ms

logo_teolenn_75.png

logo_teolenn_75.png

476 ms

logo_corsen_75.png

logo_corsen_75.png

474 ms

logo_eoulsan_75.png

logo_eoulsan_75.png

477 ms

Accessibility Review

transcriptome.ens.fr accessibility score

79

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

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

transcriptome.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

SEO Factors

transcriptome.ens.fr SEO score

69

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    FR

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Transcriptome.ens.fr can be misinterpreted by Google and other search engines. Our service has detected that French is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Transcriptome.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

transcriptome.ens.fr

Open Graph description is not detected on the main page of Transcriptome Ens. 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: