Tools & Wizards About Us

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

grandvision.global

GrandVision is a global leader in optical retailing

Page Load Speed

3.1 sec in total

First Response

184 ms

Resources Loaded

1.7 sec

Page Rendered

1.2 sec

About Website

Visit grandvision.global now to see the best up-to-date Grand Vision content for France and also check out these interesting facts you probably never knew about grandvision.global

GrandVision is a global leader in optical retailing and delivers high quality and affordable eye care to more and more people around the world

Visit grandvision.global

Key Findings

We analyzed Grandvision.global page load time and found that the first response time was 184 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

grandvision.global performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

44/100

10%

LCP (Largest Contentful Paint)

Value5.9 s

13/100

25%

SI (Speed Index)

Value9.5 s

12/100

10%

TBT (Total Blocking Time)

Value1,590 ms

12/100

30%

CLS (Cumulative Layout Shift)

Value0.147

77/100

15%

TTI (Time to Interactive)

Value13.2 s

12/100

10%

Network Requests Diagram

grandvision.global

184 ms

www.generale-optique.com

141 ms

polyfill.min.js

41 ms

otSDKStub.js

73 ms

_app-448929a41e24906d7b08.css

630 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Grandvision.global, 30% (9 requests) were made to Cdn.cookielaw.org and 30% (9 requests) were made to Assets.grandvision.io. The less responsive or slowest element that took the longest time to load (1.4 sec) relates to the external source Assets.grandvision.io.

Page Optimization Overview & Recommendations

Page size can be reduced by 481.0 kB (38%)

Content Size

1.3 MB

After Optimization

800.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Grandvision.global main page is 1.3 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. 70% of websites need less resources to load. Images take 701.7 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 408.1 kB

  • Original 493.5 kB
  • After minification 492.6 kB
  • After compression 85.4 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 408.1 kB or 83% of the original size.

Image Optimization

-0%

Potential reduce by 2 B

  • Original 701.7 kB
  • After minification 701.7 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. Grand Vision images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 74 B

  • Original 8.2 kB
  • After minification 8.2 kB
  • After compression 8.1 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

-93%

Potential reduce by 72.8 kB

  • Original 78.5 kB
  • After minification 10.2 kB
  • After compression 5.7 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. Grandvision.global needs all CSS files to be minified and compressed as it can save up to 72.8 kB or 93% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (57%)

Requests Now

28

After Optimization

12

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Grand Vision. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

grandvision.global accessibility score

87

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

[id] attributes on active, focusable elements 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

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

grandvision.global 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

Missing source maps for large first-party JavaScript

SEO Factors

grandvision.global SEO score

84

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    FR

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Grandvision.global can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed French language. Our system also found out that Grandvision.global 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

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