5.5 sec in total
266 ms
4.9 sec
361 ms
Welcome to dunod.com homepage info - get ready to check Dunod best content for France right away, or after learning these important things about dunod.com
Dunod Editions. Edition de livres de savoirs pour étudiants, professionnels, amateurs en entreprise, sciences, techniques, informatique, psy, bien-être et lo...
Visit dunod.comWe analyzed Dunod.com page load time and found that the first response time was 266 ms and then it took 5.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
dunod.com performance score
name
value
score
weighting
Value5.3 s
7/100
10%
Value16.0 s
0/100
25%
Value6.8 s
35/100
10%
Value2,420 ms
5/100
30%
Value0.212
59/100
15%
Value21.3 s
1/100
10%
266 ms
614 ms
170 ms
368 ms
149 ms
Our browser made a total of 127 requests to load all elements on the main page. We found that 83% of them (106 requests) were addressed to the original Dunod.com, 5% (6 requests) were made to Medias.dunod.com and 2% (2 requests) were made to Apis.google.com. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Dunod.com.
Page size can be reduced by 880.4 kB (48%)
1.8 MB
944.3 kB
In fact, the total size of Dunod.com main page is 1.8 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 55% of websites need less resources to load. Images take 849.3 kB which makes up the majority of the site volume.
Potential reduce by 173.4 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 173.4 kB or 86% of the original size.
Potential reduce by 113.4 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, Dunod needs image optimization as it can save up to 113.4 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 269.1 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 269.1 kB or 69% of the original size.
Potential reduce by 324.4 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. Dunod.com needs all CSS files to be minified and compressed as it can save up to 324.4 kB or 85% of the original size.
Number of requests can be reduced by 39 (32%)
123
84
The browser has sent 123 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dunod. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.
dunod.com
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www.dunod.com
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views.css
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css_c28f8b5ba28e9dc87a4b0cf9e561bbf0.css
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dunod.com accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
ARIA input fields do not have accessible names
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
Image elements do not have [alt] attributes
Links do not have a discernible name
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
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
List items (<li>) are not contained within <ul> or <ol> parent elements.
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
dunod.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
dunod.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
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
Document uses legible font sizes
Tap targets are not sized appropriately
N/A
FR
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dunod.com 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), while the claimed language is French. Our system also found out that Dunod.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.
dunod.com
Open Graph description is not detected on the main page of Dunod. 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: