Tools & Wizards About Us
dev.calcul-impots.com screenshot

Report Summary

  • 66

    Performance

    Renders faster than
    79% of other websites

  • 54

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 89

    SEO

    Google-friendlier than
    66% of websites

dev.calcul-impots.com

Calcul et déclaration de l'impôt sur le revenu - Impots 2019

Page Load Speed

2.8 sec in total

First Response

190 ms

Resources Loaded

1.9 sec

Page Rendered

724 ms

dev.calcul-impots.com screenshot

About Website

Welcome to dev.calcul-impots.com homepage info - get ready to check De V Calcul Impots best content for France right away, or after learning these important things about dev.calcul-impots.com

Calculez sans peine votre impôt sur le revenu 2019 : tout savoir sur la déclaration, le calcul, le TMI, le calendrier ou encore les réductions d'impôt

Visit dev.calcul-impots.com

Key Findings

We analyzed Dev.calcul-impots.com page load time and found that the first response time was 190 ms and then it took 2.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

dev.calcul-impots.com performance score

66

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

38/100

10%

LCP (Largest Contentful Paint)

Value4.2 s

44/100

25%

SI (Speed Index)

Value4.5 s

72/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.254

49/100

15%

TTI (Time to Interactive)

Value5.0 s

77/100

10%

Network Requests Diagram

dev.calcul-impots.com

190 ms

dev.calcul-impots.com

342 ms

www.calcul-impots.com

556 ms

169 ms

249 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that 6% of them (2 requests) were addressed to the original Dev.calcul-impots.com, 71% (22 requests) were made to Calcul-impots.com and 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (577 ms) relates to the external source S3.eu-central-1.amazonaws.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 97.9 kB (34%)

Content Size

285.8 kB

After Optimization

187.9 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Dev.calcul-impots.com main page is 285.8 kB. 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. Images take 126.5 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 86.7 kB

  • Original 114.2 kB
  • After minification 110.4 kB
  • After compression 27.5 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 86.7 kB or 76% of the original size.

Image Optimization

-8%

Potential reduce by 10.1 kB

  • Original 126.5 kB
  • After minification 116.5 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. De V Calcul Impots images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 1.2 kB

  • Original 45.1 kB
  • After minification 45.1 kB
  • After compression 44.0 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.

Requests Breakdown

Number of requests can be reduced by 12 (44%)

Requests Now

27

After Optimization

15

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of De V Calcul Impots. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

dev.calcul-impots.com

dev.calcul-impots.com

190 ms

dev.calcul-impots.com

dev.calcul-impots.com

342 ms

www.calcul-impots.com

www.calcul-impots.com

556 ms

169 ms

249 ms

js

js

64 ms

conversion.js

conversion.js

85 ms

analytics.js

analytics.js

69 ms

calcul-impots.png

calcul-impots.png

577 ms

bg-body.gif

bg-body.gif

130 ms

picto.gif

picto.gif

129 ms

bg-contenu.gif

bg-contenu.gif

173 ms

photo-declaration.jpg

photo-declaration.jpg

172 ms

bg-tableau.gif

bg-tableau.gif

252 ms

img-content.jpg

img-content.jpg

335 ms

carte-paris.gif

carte-paris.gif

256 ms

carte.gif

carte.gif

256 ms

carte_departements.png

carte_departements.png

257 ms

icone-menu-mobile.jpg

icone-menu-mobile.jpg

257 ms

rss.png

rss.png

335 ms

icone-favoris.png

icone-favoris.png

336 ms

go-button-bg.gif

go-button-bg.gif

275 ms

footer_17.jpg

footer_17.jpg

275 ms

header_03.jpg

header_03.jpg

275 ms

fil-arianne.gif

fil-arianne.gif

354 ms

separator_12.jpg

separator_12.jpg

354 ms

57 ms

collect

collect

15 ms

loadingAnimation.gif

loadingAnimation.gif

296 ms

mentone-semibol-webfont.woff

mentone-semibol-webfont.woff

377 ms

28 ms

Accessibility Review

dev.calcul-impots.com accessibility score

54

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.

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

dev.calcul-impots.com best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

dev.calcul-impots.com SEO score

89

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 uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    FR

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dev.calcul-impots.com can be misinterpreted by Google and other search engines. Our service has detected that French is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Dev.calcul-impots.com 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

dev.calcul-impots.com

Open Graph description is not detected on the main page of De V Calcul Impots. 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: