Tools & Wizards About Us

Report Summary

  • 12

    Performance

    Renders faster than
    25% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

booking.costacroisieres.fr

Costa Croisières: voyages et vacances en croisière | Costa Croisières

Page Load Speed

1.1 sec in total

First Response

240 ms

Resources Loaded

774 ms

Page Rendered

78 ms

About Website

Click here to check amazing Booking Costa Croisieres content for France. Otherwise, check out these important facts you probably never knew about booking.costacroisieres.fr

Découvrez les offres exclusives et les destinations de rêve Costa Croisières avec le Meilleur Prix Garanti. Visitez le site et préparez votre voyage en croisière !

Visit booking.costacroisieres.fr

Key Findings

We analyzed Booking.costacroisieres.fr page load time and found that the first response time was 240 ms and then it took 852 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

booking.costacroisieres.fr performance score

12

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value19.3 s

0/100

10%

LCP (Largest Contentful Paint)

Value26.5 s

0/100

25%

SI (Speed Index)

Value46.7 s

0/100

10%

TBT (Total Blocking Time)

Value32,840 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.137

79/100

15%

TTI (Time to Interactive)

Value62.5 s

0/100

10%

Network Requests Diagram

booking.costacroisieres.fr

240 ms

www.costacroisieres.fr

185 ms

main.20240730154608.css

52 ms

additionalCommonScript.js

23 ms

jquery-3.4.1.min.js

85 ms

Our browser made a total of 15 requests to load all elements on the main page. We found that 7% of them (1 request) were addressed to the original Booking.costacroisieres.fr, 53% (8 requests) were made to Costacroisieres.fr and 7% (1 request) were made to Progressive.costa.it. The less responsive or slowest element that took the longest time to load (253 ms) relates to the external source Amp.akamaized.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 3.3 MB (78%)

Content Size

4.2 MB

After Optimization

940.9 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Booking.costacroisieres.fr main page is 4.2 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. 20% of websites need less resources to load. Javascripts take 3.9 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 116.5 kB

  • Original 141.2 kB
  • After minification 140.5 kB
  • After compression 24.7 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 116.5 kB or 82% of the original size.

JavaScript Optimization

-77%

Potential reduce by 3.0 MB

  • Original 3.9 MB
  • After minification 3.9 MB
  • After compression 892.7 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 3.0 MB or 77% of the original size.

CSS Optimization

-88%

Potential reduce by 169.7 kB

  • Original 193.2 kB
  • After minification 192.9 kB
  • After compression 23.5 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. Booking.costacroisieres.fr needs all CSS files to be minified and compressed as it can save up to 169.7 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (77%)

Requests Now

13

After Optimization

3

  • AJAX
  • JavaScript
  • CSS

The browser has sent 13 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Booking Costa Croisieres. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

booking.costacroisieres.fr accessibility score

70

Accessibility Issues

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

High

button, link, and menuitem elements do not have accessible names.

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

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

booking.costacroisieres.fr best practices score

83

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

Missing source maps for large first-party JavaScript

SEO Factors

booking.costacroisieres.fr SEO score

84

Search Engine Optimization Advices

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 doesn't use 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 Booking.costacroisieres.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 Booking.costacroisieres.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

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