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Report Summary

About Website

Welcome to alef.persee.mines-paristech.fr homepage info - get ready to check Alef Persee Mines Paristech best content for France right away, or after learning these important things about alef.persee.mines-paristech.fr

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name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

97/100

10%

LCP (Largest Contentful Paint)

Value1.4 s

100/100

25%

SI (Speed Index)

Value2.0 s

99/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.4 s

100/100

10%

alef.persee.mines-paristech.fr

369 ms

alef.persee.mines-paristech.fr

161 ms

Our browser made a total of 2 requests to load all elements on the main page. We found that all of those requests were addressed to Alef.persee.mines-paristech.fr and no external sources were called. The less responsive or slowest element that took the longest time to load (369 ms) belongs to the original domain Alef.persee.mines-paristech.fr.

Content Size

3.3 MB

After Optimization

2.7 MB

In fact, the total size of Alef.persee.mines-paristech.fr main page is 3.3 MB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. Images take 2.5 MB which makes up the majority of the site volume.

HTML Optimization

-14%

Potential reduce by 20 B

Original 142 B
After minification 142 B
After compression 122 B

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 20 B or 14% of the original size.

Image Optimization

-1%

Potential reduce by 35.7 kB

Original 2.5 MB
After minification 2.5 MB

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. Alef Persee Mines Paristech images are well optimized though.

JavaScript Optimization

-60%

Potential reduce by 181.2 kB

Original 302.3 kB
After minification 293.0 kB
After compression 121.1 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 181.2 kB or 60% of the original size.

CSS Optimization

-74%

Potential reduce by 317.5 kB

Original 429.8 kB
After minification 429.6 kB
After compression 112.3 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. Alef.persee.mines-paristech.fr needs all CSS files to be minified and compressed as it can save up to 317.5 kB or 74% of the original size.

Requests Now

After Optimization

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

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

Document doesn't have a <title> element

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

High

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

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Document doesn't have a <title> element

Language and Encoding

Language Detected

N/A
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 Alef.persee.mines-paristech.fr can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Alef.persee.mines-paristech.fr 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

alef.persee.mines-paristech.fr

Open Graph description is not detected on the main page of Alef Persee Mines Paristech. 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: