Tools & Wizards About Us
chemphys.u-strasbg.fr screenshot

Report Summary

  • 96

    Performance

    Renders faster than
    94% of other websites

  • 53

    Accessibility

    Visual factors better than
    that of 22% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

chemphys.u-strasbg.fr

" Universit de Strasbourg: Chimie-Physique, Science et Droit "

Page Load Speed

1.4 sec in total

First Response

522 ms

Resources Loaded

731 ms

Page Rendered

183 ms

chemphys.u-strasbg.fr screenshot

About Website

Click here to check amazing Chemphys U Strasbg content for France. Otherwise, check out these important facts you probably never knew about chemphys.u-strasbg.fr

Visit chemphys.u-strasbg.fr

Key Findings

We analyzed Chemphys.u-strasbg.fr page load time and found that the first response time was 522 ms and then it took 914 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

chemphys.u-strasbg.fr performance score

96

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

90/100

10%

LCP (Largest Contentful Paint)

Value1.8 s

99/100

25%

SI (Speed Index)

Value2.0 s

99/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.116

85/100

15%

TTI (Time to Interactive)

Value1.8 s

100/100

10%

Network Requests Diagram

chemphys.u-strasbg.fr

522 ms

chemphys-big.jpg

98 ms

semaine-science.gif

193 ms

apache_pb.gif

194 ms

linux-power.gif

199 ms

Our browser made a total of 5 requests to load all elements on the main page. We found that all of those requests were addressed to Chemphys.u-strasbg.fr and no external sources were called. The less responsive or slowest element that took the longest time to load (522 ms) belongs to the original domain Chemphys.u-strasbg.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.2 kB (16%)

Content Size

13.7 kB

After Optimization

11.5 kB

  • HTML
  • Images

In fact, the total size of Chemphys.u-strasbg.fr main page is 13.7 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 10.1 kB which makes up the majority of the site volume.

HTML Optimization

-62%

Potential reduce by 2.2 kB

  • Original 3.6 kB
  • After minification 3.5 kB
  • After compression 1.4 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 2.2 kB or 62% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 10.1 kB
  • After minification 10.1 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. Chemphys U Strasbg images are well optimized though.

Requests Breakdown

We found no issues to fix!

Requests Now

3

After Optimization

3

  • Images

The browser has sent 3 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chemphys U Strasbg. According to our analytics all requests are already optimized.

Network Requests Diagram

chemphys.u-strasbg.fr

chemphys.u-strasbg.fr

522 ms

chemphys-big.jpg

chemphys-big.jpg

98 ms

semaine-science.gif

semaine-science.gif

193 ms

apache_pb.gif

apache_pb.gif

194 ms

linux-power.gif

linux-power.gif

199 ms

Accessibility Review

chemphys.u-strasbg.fr accessibility score

53

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

High

Links do not have a discernible name

Best Practices

chemphys.u-strasbg.fr best practices score

67

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

chemphys.u-strasbg.fr SEO score

54

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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 Chemphys.u-strasbg.fr 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 Chemphys.u-strasbg.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

chemphys.u-strasbg.fr

Open Graph description is not detected on the main page of Chemphys U Strasbg. 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: