Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

wwwobs.univ-bpclermont.fr

Observatoire de Physique du Globe de Clermont-Ferrand

Page Load Speed

2.1 sec in total

First Response

186 ms

Resources Loaded

1.6 sec

Page Rendered

352 ms

wwwobs.univ-bpclermont.fr screenshot

About Website

Welcome to wwwobs.univ-bpclermont.fr homepage info - get ready to check Wwwobs Univbp Clermont best content for France right away, or after learning these important things about wwwobs.univ-bpclermont.fr

OPGC - Centre de recherches volcaniques, département Terre et Atmosphère, réseau sismologique Auvergne et radars profileurs de vent

Visit wwwobs.univ-bpclermont.fr

Key Findings

We analyzed Wwwobs.univ-bpclermont.fr page load time and found that the first response time was 186 ms and then it took 2 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

wwwobs.univ-bpclermont.fr performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

35/100

10%

LCP (Largest Contentful Paint)

Value8.2 s

2/100

25%

SI (Speed Index)

Value6.5 s

39/100

10%

TBT (Total Blocking Time)

Value450 ms

63/100

30%

CLS (Cumulative Layout Shift)

Value0.992

2/100

15%

TTI (Time to Interactive)

Value11.2 s

20/100

10%

Network Requests Diagram

index.php

186 ms

Style_OPGC.css

181 ms

mm_menu.js

276 ms

fondgrisMotif.jpg

459 ms

maison.gif

94 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that all of those requests were addressed to Wwwobs.univ-bpclermont.fr and no external sources were called. The less responsive or slowest element that took the longest time to load (638 ms) belongs to the original domain Wwwobs.univ-bpclermont.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 361.3 kB (50%)

Content Size

729.4 kB

After Optimization

368.1 kB

In fact, the total size of Wwwobs.univ-bpclermont.fr main page is 729.4 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. 30% of websites need less resources to load. Images take 640.9 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 34.8 kB

  • Original 41.9 kB
  • After minification 37.0 kB
  • After compression 7.0 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 4.9 kB, which is 12% 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 34.8 kB or 83% of the original size.

Image Optimization

-45%

Potential reduce by 287.6 kB

  • Original 640.9 kB
  • After minification 353.3 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. Obviously, Wwwobs Univbp Clermont needs image optimization as it can save up to 287.6 kB or 45% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-81%

Potential reduce by 24.2 kB

  • Original 30.0 kB
  • After minification 24.9 kB
  • After compression 5.7 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 24.2 kB or 81% of the original size.

CSS Optimization

-88%

Potential reduce by 14.6 kB

  • Original 16.6 kB
  • After minification 13.4 kB
  • After compression 2.0 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. Wwwobs.univ-bpclermont.fr needs all CSS files to be minified and compressed as it can save up to 14.6 kB or 88% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

29

After Optimization

29

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Wwwobs Univbp Clermont. According to our analytics all requests are already optimized.

Accessibility Review

wwwobs.univ-bpclermont.fr accessibility score

77

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

Some elements have a [tabindex] value greater than 0

Best Practices

wwwobs.univ-bpclermont.fr best practices score

75

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

Missing source maps for large first-party JavaScript

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

wwwobs.univ-bpclermont.fr SEO score

77

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

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 Wwwobs.univ-bpclermont.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 Wwwobs.univ-bpclermont.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

Open Graph description is not detected on the main page of Wwwobs Univbp Clermont. 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: