5.1 sec in total
248 ms
4.5 sec
285 ms
Click here to check amazing Optical Center content for France. Otherwise, check out these important facts you probably never knew about optical-center.fr
Lunettes Homme, Lunettes Femme, Lentilles de Contact, Lunettes de Soleil, Lunettes de vue: Nous livrons vos lunettes de vue, Lunettes Ray-Ban ou lentilles dans toute la France.
Visit optical-center.frWe analyzed Optical-center.fr page load time and found that the first response time was 248 ms and then it took 4.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
optical-center.fr performance score
name
value
score
weighting
Value3.4 s
37/100
10%
Value11.5 s
0/100
25%
Value11.6 s
4/100
10%
Value8,360 ms
0/100
30%
Value0.002
100/100
15%
Value14.5 s
9/100
10%
248 ms
528 ms
438 ms
465 ms
466 ms
Our browser made a total of 204 requests to load all elements on the main page. We found that 2% of them (5 requests) were addressed to the original Optical-center.fr, 18% (37 requests) were made to I2.optical-center.fr and 8% (16 requests) were made to I3.optical-center.fr. The less responsive or slowest element that took the longest time to load (2.3 sec) relates to the external source I2.optical-center.fr.
Page size can be reduced by 2.3 MB (44%)
5.3 MB
3.0 MB
In fact, the total size of Optical-center.fr main page is 5.3 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. 65% of websites need less resources to load. Images take 2.5 MB which makes up the majority of the site volume.
Potential reduce by 236.7 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 236.7 kB or 80% of the original size.
Potential reduce by 298.4 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, Optical Center needs image optimization as it can save up to 298.4 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 1.5 MB
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 1.5 MB or 70% of the original size.
Potential reduce by 267.1 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. Optical-center.fr needs all CSS files to be minified and compressed as it can save up to 267.1 kB or 82% of the original size.
Number of requests can be reduced by 79 (42%)
188
109
The browser has sent 188 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Optical Center. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 41 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.
optical-center.fr
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optical-center.fr accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
ARIA IDs are not unique
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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
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.
optical-center.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
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
optical-center.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 uses legible font sizes
FR
FR
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Optical-center.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 Optical-center.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.
optical-center.fr
Open Graph description is not detected on the main page of Optical Center. 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: