Report Summary

  • 84

    Performance

    Renders faster than
    88% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 84% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 96

    SEO

    Google-friendlier than
    91% of websites

zip-world.fr

Zip World, le spécialiste des billets d’avion Tour du monde, multi-destinations, sur l'Océanie et l'Amérique du Sud

Page Load Speed

2.2 sec in total

First Response

315 ms

Resources Loaded

1.5 sec

Page Rendered

361 ms

zip-world.fr screenshot

About Website

Click here to check amazing Zip World content for France. Otherwise, check out these important facts you probably never knew about zip-world.fr

Réservez votre billet d'avion tour du monde au meilleur tarif. Profitez de billets d'avions multi-destinations sur mesure, et des meilleurs prix pour les vols vers les Iles du Pacifique : vol Wallis e...

Visit zip-world.fr

Key Findings

We analyzed Zip-world.fr page load time and found that the first response time was 315 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

zip-world.fr performance score

84

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

63/100

10%

LCP (Largest Contentful Paint)

Value2.9 s

79/100

25%

SI (Speed Index)

Value3.0 s

94/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.0 s

42/100

10%

Network Requests Diagram

www.zip-world.fr

315 ms

jquery.impromptu.css

101 ms

bootstrap.min.css

40 ms

plan.min.css

136 ms

jquery.datepick.css

23 ms

Our browser made a total of 52 requests to load all elements on the main page. We found that 90% of them (47 requests) were addressed to the original Zip-world.fr, 4% (2 requests) were made to Connect.facebook.net and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (646 ms) belongs to the original domain Zip-world.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 57.6 kB (6%)

Content Size

1.0 MB

After Optimization

960.5 kB

In fact, the total size of Zip-world.fr main page is 1.0 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. 55% of websites need less resources to load. Images take 830.2 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 44.6 kB

  • Original 54.8 kB
  • After minification 43.4 kB
  • After compression 10.3 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. This page needs HTML code to be minified as it can gain 11.4 kB, which is 21% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 44.6 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 68 B

  • Original 830.2 kB
  • After minification 830.1 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. Zip World images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 12.2 kB

  • Original 89.1 kB
  • After minification 89.1 kB
  • After compression 76.8 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 12.2 kB or 14% of the original size.

CSS Optimization

-2%

Potential reduce by 707 B

  • Original 43.9 kB
  • After minification 43.9 kB
  • After compression 43.2 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. Zip-world.fr has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 19 (38%)

Requests Now

50

After Optimization

31

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zip World. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

zip-world.fr accessibility score

94

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

Heading elements are not in a sequentially-descending order

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

zip-world.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

Page has valid source maps

SEO Factors

zip-world.fr SEO score

96

Search Engine Optimization Advices

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 uses 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 Zip-world.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 Zip-world.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 description is not detected on the main page of Zip World. 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: