Tools & Wizards About Us
calculatrices.org screenshot

Report Summary

  • 94

    Performance

    Renders faster than
    93% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

calculatrices.org

Calculatrices.org

Page Load Speed

1.5 sec in total

First Response

362 ms

Resources Loaded

980 ms

Page Rendered

108 ms

calculatrices.org screenshot

About Website

Welcome to calculatrices.org homepage info - get ready to check Calculatrices best content right away, or after learning these important things about calculatrices.org

Ressources pour calculatrices graphiques Casio, téléchargement de programmes et de jeux ainsi que de nombreuses astuces et explications sur le fonctionnement de votre calculatrice graphique.

Visit calculatrices.org

Key Findings

We analyzed Calculatrices.org page load time and found that the first response time was 362 ms and then it took 1.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

calculatrices.org performance score

94

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.5 s

96/100

10%

LCP (Largest Contentful Paint)

Value3.0 s

77/100

25%

SI (Speed Index)

Value1.8 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.5 s

100/100

10%

Network Requests Diagram

calculatrices.org

362 ms

emx_nav_left.css

148 ms

urchin.js

6 ms

__utm.gif

9 ms

bg_grad.jpg

122 ms

Our browser made a total of 14 requests to load all elements on the main page. We found that 86% of them (12 requests) were addressed to the original Calculatrices.org, 14% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (454 ms) belongs to the original domain Calculatrices.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 13.9 kB (27%)

Content Size

50.8 kB

After Optimization

36.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Calculatrices.org main page is 50.8 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. Only 10% of websites need less resources to load. Images take 27.5 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 6.7 kB

  • Original 9.5 kB
  • After minification 8.7 kB
  • After compression 2.9 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 6.7 kB or 70% of the original size.

Image Optimization

-2%

Potential reduce by 635 B

  • Original 27.5 kB
  • After minification 26.9 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. Calculatrices images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 971 B

  • Original 6.8 kB
  • After minification 6.8 kB
  • After compression 5.9 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 971 B or 14% of the original size.

CSS Optimization

-82%

Potential reduce by 5.7 kB

  • Original 6.9 kB
  • After minification 4.2 kB
  • After compression 1.2 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. Calculatrices.org needs all CSS files to be minified and compressed as it can save up to 5.7 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (46%)

Requests Now

13

After Optimization

7

  • Images
  • JavaScript
  • CSS

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

Network Requests Diagram

calculatrices.org

calculatrices.org

362 ms

emx_nav_left.css

emx_nav_left.css

148 ms

urchin.js

urchin.js

6 ms

__utm.gif

__utm.gif

9 ms

bg_grad.jpg

bg_grad.jpg

122 ms

glbnav_background.gif

glbnav_background.gif

221 ms

gblnav_left.gif

gblnav_left.gif

216 ms

glbnav_right.gif

glbnav_right.gif

227 ms

tl_curve_white.gif

tl_curve_white.gif

221 ms

tr_curve_white.gif

tr_curve_white.gif

219 ms

home_house.png

home_house.png

241 ms

bg_nav.jpg

bg_nav.jpg

328 ms

accueil4.jpg

accueil4.jpg

454 ms

document_quote.png

document_quote.png

355 ms

Accessibility Review

calculatrices.org accessibility score

63

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.

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

Best Practices

calculatrices.org best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

SEO Factors

calculatrices.org SEO score

62

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

Language and Encoding

  • Language Detected

    FR

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

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

calculatrices.org

Open Graph description is not detected on the main page of Calculatrices. 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: