Tools & Wizards About Us
lacite-nantes.fr screenshot

Report Summary

  • 61

    Performance

    Renders faster than
    76% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

lacite-nantes.fr

La Cité des Congrès de Nantes | Grand public | Professionnels

Page Load Speed

4.1 sec in total

First Response

348 ms

Resources Loaded

2.9 sec

Page Rendered

857 ms

lacite-nantes.fr screenshot

About Website

Visit lacite-nantes.fr now to see the best up-to-date La Cite Nantes content for France and also check out these interesting facts you probably never knew about lacite-nantes.fr

Manifestations culturelles et professionnelles à Nantes : spectacles, concerts, théâtre, musique et organisation de congrès, séminaires, salons, expositions ...

Visit lacite-nantes.fr

Key Findings

We analyzed Lacite-nantes.fr page load time and found that the first response time was 348 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

lacite-nantes.fr performance score

61

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

26/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

35/100

25%

SI (Speed Index)

Value6.6 s

37/100

10%

TBT (Total Blocking Time)

Value190 ms

90/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value8.7 s

36/100

10%

Network Requests Diagram

lacite-nantes.fr

348 ms

lacite-nantes.fr

624 ms

sbi-styles.min.css

169 ms

style.min.css

258 ms

leaflet.css

263 ms

Our browser made a total of 92 requests to load all elements on the main page. We found that 91% of them (84 requests) were addressed to the original Lacite-nantes.fr, 2% (2 requests) were made to Connect.facebook.net and 1% (1 request) were made to Google.com. The less responsive or slowest element that took the longest time to load (838 ms) belongs to the original domain Lacite-nantes.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 85.1 kB (5%)

Content Size

1.6 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lacite-nantes.fr main page is 1.6 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 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 66.0 kB

  • Original 83.2 kB
  • After minification 75.8 kB
  • After compression 17.2 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 66.0 kB or 79% of the original size.

Image Optimization

-0%

Potential reduce by 668 B

  • Original 1.0 MB
  • After minification 1.0 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. La Cite Nantes images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 5.6 kB

  • Original 370.3 kB
  • After minification 370.3 kB
  • After compression 364.7 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. This website has mostly compressed JavaScripts.

CSS Optimization

-11%

Potential reduce by 12.9 kB

  • Original 117.7 kB
  • After minification 117.7 kB
  • After compression 104.9 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. Lacite-nantes.fr needs all CSS files to be minified and compressed as it can save up to 12.9 kB or 11% of the original size.

Requests Breakdown

Number of requests can be reduced by 50 (59%)

Requests Now

85

After Optimization

35

  • Images
  • JavaScript
  • CSS

The browser has sent 85 CSS, Javascripts, AJAX and image requests in order to completely render the main page of La Cite Nantes. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 28 to 1 for JavaScripts and from 24 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

lacite-nantes.fr

lacite-nantes.fr

348 ms

lacite-nantes.fr

lacite-nantes.fr

624 ms

sbi-styles.min.css

sbi-styles.min.css

169 ms

style.min.css

style.min.css

258 ms

leaflet.css

leaflet.css

263 ms

mappress.css

mappress.css

263 ms

shortcodes.css

shortcodes.css

265 ms

bootstrap-reboot.min.css

bootstrap-reboot.min.css

264 ms

bootstrap.min.css

bootstrap.min.css

347 ms

bootstrap-grid.min.css

bootstrap-grid.min.css

343 ms

reset.css

reset.css

345 ms

lightbox.css

lightbox.css

355 ms

font-awesome.css

font-awesome.css

357 ms

iconotheque.css

iconotheque.css

356 ms

cdc.css

cdc.css

427 ms

cantarell.css

cantarell.css

428 ms

sofia.css

sofia.css

430 ms

sansation.css

sansation.css

431 ms

social-media.css

social-media.css

431 ms

swiper.min.css

swiper.min.css

432 ms

style.css

style.css

522 ms

responsive.css

responsive.css

513 ms

components.css

components.css

516 ms

style_vi.min.css

style_vi.min.css

516 ms

jquery.fancybox.min.css

jquery.fancybox.min.css

518 ms

socialshare.css

socialshare.css

517 ms

modernizr.js

modernizr.js

598 ms

classie.js

classie.js

624 ms

jquery.min.js

jquery.min.js

691 ms

jquery-migrate.min.js

jquery-migrate.min.js

624 ms

popper.js

popper.js

690 ms

utils.js

utils.js

625 ms

tether.js

tether.js

684 ms

bootstrap.min.js

bootstrap.min.js

685 ms

scrollreveal.min.js

scrollreveal.min.js

686 ms

jquery.mobile.custom.min.js

jquery.mobile.custom.min.js

718 ms

jquery.lazy.min.js

jquery.lazy.min.js

768 ms

api.js

api.js

40 ms

lightbox.js

lightbox.js

696 ms

swiper.min.js

swiper.min.js

700 ms

jquery.flexslider.min.js

jquery.flexslider.min.js

521 ms

_readmoreless.js

_readmoreless.js

725 ms

main.js

main.js

520 ms

acces-pro.js

acces-pro.js

595 ms

jquery.fancybox.min.js

jquery.fancybox.min.js

598 ms

jquery.easing.min.js

jquery.easing.min.js

523 ms

jquery.mousewheel.min.js

jquery.mousewheel.min.js

524 ms

wpfront-scroll-top.min.js

wpfront-scroll-top.min.js

591 ms

socialshare.js

socialshare.js

590 ms

close.png

close.png

324 ms

loading.gif

loading.gif

327 ms

prev.png

prev.png

328 ms

next.png

next.png

535 ms

recaptcha__en.js

recaptcha__en.js

181 ms

gtm.js

gtm.js

226 ms

logo-la-cite-le-centre-des-congres-de-nantes-fr.svg

logo-la-cite-le-centre-des-congres-de-nantes-fr.svg

174 ms

cite-exterieur.jpg

cite-exterieur.jpg

327 ms

Assises-Dechets23@CDC-V-GarnierCDC_00036-380x250.jpeg

Assises-Dechets23@CDC-V-GarnierCDC_00036-380x250.jpeg

174 ms

USF@CDC-V-Garnier-98-clair-380x250.jpg

USF@CDC-V-Garnier-98-clair-380x250.jpg

224 ms

Assises-Mer23@CDC-T-Guitter1-21-380x250.jpg

Assises-Mer23@CDC-T-Guitter1-21-380x250.jpg

299 ms

Gabarit-Newsletter-264-x-202-12.jpg

Gabarit-Newsletter-264-x-202-12.jpg

299 ms

%C3%A9galit%C3%A9-homme-femme_10032020-380x250.jpg

%C3%A9galit%C3%A9-homme-femme_10032020-380x250.jpg

298 ms

Gabarit-Newsletter-264-x-202.jpg

Gabarit-Newsletter-264-x-202.jpg

297 ms

chrome_9OpXqDOu3T-removebg-preview.png

chrome_9OpXqDOu3T-removebg-preview.png

439 ms

destination-labellisee.png

destination-labellisee.png

372 ms

logo-aipc.png

logo-aipc.png

370 ms

ICCA.png

ICCA.png

371 ms

AIPC.png

AIPC.png

371 ms

Coesio-1.png

Coesio-1.png

409 ms

france.fr_.jpg

france.fr_.jpg

438 ms

france_congres_nouveau_logo_2017_cmjn_horizontal_innov.png

france_congres_nouveau_logo_2017_cmjn_horizontal_innov.png

523 ms

unimev.png

unimev.png

438 ms

ouest-congres.png

ouest-congres.png

439 ms

nantes-saint-nazaire.jpg

nantes-saint-nazaire.jpg

493 ms

unknown-1.png

unknown-1.png

521 ms

Sans-titre-2.jpg

Sans-titre-2.jpg

522 ms

logo-la-cite-le-centre-des-congres-de-nantes.svg

logo-la-cite-le-centre-des-congres-de-nantes.svg

523 ms

sdk.js

sdk.js

170 ms

landing-v2.jpg

landing-v2.jpg

838 ms

arrow-grey.png

arrow-grey.png

556 ms

mask-bottom-white.svg

mask-bottom-white.svg

582 ms

evenement-380x250.jpg

evenement-380x250.jpg

584 ms

Vues-Ext%C3%A9rieures%C2%A9La-Cit%C3%A9-Nantes-V-Garnier-043-380x250.jpeg

Vues-Ext%C3%A9rieures%C2%A9La-Cit%C3%A9-Nantes-V-Garnier-043-380x250.jpeg

586 ms

sansationbold-webfont.woff

sansationbold-webfont.woff

459 ms

iconotheque.woff

iconotheque.woff

514 ms

sansationregular-webfont.woff

sansationregular-webfont.woff

545 ms

social-media.woff

social-media.woff

544 ms

sdk.js

sdk.js

46 ms

insight.min.js

insight.min.js

27 ms

matomo.js

matomo.js

61 ms

matomo.php

matomo.php

473 ms

1.png

1.png

87 ms

Accessibility Review

lacite-nantes.fr accessibility score

75

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

lacite-nantes.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

lacite-nantes.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

High

robots.txt is not valid

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

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

    FR

  • Language Claimed

    FR

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Lacite-nantes.fr can be misinterpreted by Google and other search engines. Our service has detected that French is used on the page, and it matches the claimed language. Our system also found out that Lacite-nantes.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

lacite-nantes.fr

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