4.5 sec in total
752 ms
3.5 sec
256 ms
Visit semiv-velizy.fr now to see the best up-to-date Semiv Velizy content for France and also check out these interesting facts you probably never knew about semiv-velizy.fr
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Visit semiv-velizy.frWe analyzed Semiv-velizy.fr page load time and found that the first response time was 752 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 60% of websites can load faster.
semiv-velizy.fr performance score
name
value
score
weighting
Value3.1 s
46/100
10%
Value7.9 s
3/100
25%
Value12.6 s
3/100
10%
Value760 ms
38/100
30%
Value0.354
31/100
15%
Value30.6 s
0/100
10%
752 ms
373 ms
384 ms
283 ms
288 ms
Our browser made a total of 73 requests to load all elements on the main page. We found that 92% of them (67 requests) were addressed to the original Semiv-velizy.fr, 3% (2 requests) were made to Google-analytics.com and 3% (2 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Semiv-velizy.fr.
Page size can be reduced by 223.2 kB (32%)
695.1 kB
471.9 kB
In fact, the total size of Semiv-velizy.fr main page is 695.1 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. 25% of websites need less resources to load. Images take 614.4 kB which makes up the majority of the site volume.
Potential reduce by 15.0 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 15.0 kB or 75% of the original size.
Potential reduce by 176.5 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. Obviously, Semiv Velizy needs image optimization as it can save up to 176.5 kB or 29% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 11.0 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 11.0 kB or 32% of the original size.
Potential reduce by 20.6 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. Semiv-velizy.fr needs all CSS files to be minified and compressed as it can save up to 20.6 kB or 78% of the original size.
Number of requests can be reduced by 14 (20%)
70
56
The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Semiv Velizy. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.
semiv-velizy.fr
752 ms
layout.css
373 ms
site.css
384 ms
form.css
283 ms
marges.css
288 ms
titres.css
255 ms
menu.css
374 ms
textes.css
398 ms
couleurs.css
400 ms
tables.css
428 ms
clients.css
490 ms
css
26 ms
jquery.min.js
27 ms
jquery.mousewheel-3.0.4.pack.js
405 ms
jquery.fancybox-1.3.4.pack.js
523 ms
jquery.fancybox-1.3.4.css
533 ms
cache.png
784 ms
cache.png
786 ms
cache.png
784 ms
barreHaut.png
144 ms
bgGauche.png
160 ms
bg.png
297 ms
logo_transparent.png
252 ms
slogan.png
253 ms
menu_inactif.png
200 ms
menu_semiv0.png
402 ms
picto_rss_decale.png
311 ms
puceGauche.png
332 ms
picto_adresse.png
383 ms
picto_mail.png
406 ms
adresse_email.png
415 ms
picto_tel.png
426 ms
picto_fax.png
452 ms
menu_semiv.png
535 ms
menu_loc.png
549 ms
menu_cop.png
671 ms
menu_utile.png
672 ms
menu_contact.png
624 ms
photo.png
2369 ms
titrePhoto.png
741 ms
lettreEntreNous29.png
815 ms
ga.js
31 ms
angleHG.png
745 ms
ligneH.png
754 ms
angleHD.png
756 ms
ligneG.png
874 ms
ligneD.png
883 ms
angleBG.png
890 ms
ligneB.png
902 ms
angleBD.png
922 ms
angleHG.png
930 ms
ligneH.png
1002 ms
angleHD.png
1009 ms
ligneG.png
1033 ms
ligneD.png
1037 ms
angleBG.png
1044 ms
ligneB.png
1051 ms
angleBD.png
1134 ms
angleHG.png
1142 ms
ligneH.png
1169 ms
angleHD.png
1180 ms
ligneG.png
1188 ms
ligneD.png
1199 ms
angleBG.png
1280 ms
ligneB.png
1289 ms
angleBD.png
1312 ms
cadrePhoto.png
737 ms
cadre_guidesLoc.png
762 ms
barreGuideLoc.png
769 ms
personnagesFooter1.png
836 ms
SwfduKDlxm7-vFPpKzhxuR1yI46hF1uInOrMFLVeCEI.ttf
24 ms
SwfduKDlxm7-vFPpKzhxuckF9hGo98MtZ2uvahGbmKc.ttf
23 ms
__utm.gif
13 ms
semiv-velizy.fr accessibility score
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
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
semiv-velizy.fr best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
semiv-velizy.fr SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
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
Document doesn't use legible font sizes
FR
N/A
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Semiv-velizy.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 Semiv-velizy.fr 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.
semiv-velizy.fr
Open Graph description is not detected on the main page of Semiv Velizy. 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: