Access concertandco.com. Agenda Concert And Co des concerts et des festivals en France, Belgique et Suisse.

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

37/100

10%

LCP (Largest Contentful Paint)

Value7.3 s

5/100

25%

SI (Speed Index)

Value5.3 s

58/100

10%

TBT (Total Blocking Time)

Value260 ms

83/100

30%

CLS (Cumulative Layout Shift)

Value0.091

92/100

15%

TTI (Time to Interactive)

Value6.9 s

54/100

10%

concertandco.com

502 ms

adsbygoogle.js

145 ms

js

75 ms

css

47 ms

normalize.css

112 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that 94% of them (62 requests) were addressed to the original Concertandco.com, 3% (2 requests) were made to Pagead2.googlesyndication.com and 2% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Concertandco.com.

Content Size

1.5 MB

After Optimization

916.9 kB

In fact, the total size of Concertandco.com main page is 1.5 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. 50% of websites need less resources to load. Javascripts take 667.5 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 192.5 kB

Original 253.7 kB
After minification 248.8 kB
After compression 61.1 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 192.5 kB or 76% of the original size.

Image Optimization

-10%

Potential reduce by 55.9 kB

Original 554.7 kB
After minification 498.8 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. Concert And Co images are well optimized though.

JavaScript Optimization

-50%

Potential reduce by 330.6 kB

Original 667.5 kB
After minification 667.5 kB
After compression 336.9 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 330.6 kB or 50% of the original size.

CSS Optimization

-37%

Potential reduce by 11.6 kB

Original 31.6 kB
After minification 25.7 kB
After compression 20.0 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. Concertandco.com needs all CSS files to be minified and compressed as it can save up to 11.6 kB or 37% of the original size.

Requests Now

After Optimization

The browser has sent 60 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Concert And Co. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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.

High

Buttons do not have an accessible name

High

Links do not have a discernible name

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

These items highlight common accessibility best practices.

High

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

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

FR
Language Claimed

FR
Encoding

ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Concertandco.com 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 Concertandco.com 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.

Social Sharing Optimization

concertandco.com

Open Graph description is not detected on the main page of Concert And Co. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

Agenda Concert And Co des concerts et des festivals en France, Belgique et Suisse.

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

concertandco.com

adsbygoogle.js

js

css

normalize.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

concertandco.com

adsbygoogle.js

js

css

normalize.css

jquery-ui.css

habillage.css

concertnco.css

concertandco.js

jquery-2.1.4.min.js

jquery.mousewheel.min.js

menumobile.js

jquery-ui.js

jquery.bxslider.js

raphael-min.js

jquery.mapael.js

france_regions_2016.js

appelcarte.js

show_ads_impl.js

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