HTML5 is the next version of HTML standards. HTML5 adds many new features for web developers that use to require plug-ins (flash) or javascript.
To check if a website is in HTML5 all you have to do is check the source code:
- Right click on a page
- Select "View Source Code" or "View Page Code"
- The first line will have the DOCTYPE which shows the HTML version of the page.
- If it's in HTML5 then it will say "<!DOCTYPE html>"
Detect HTML5 usage
If you want to see if a website is using HTML5 elements, you only need to view the source of the website.
If the source code starts with the following declaration:
<!DOCTYPE html>
you're onto a HTML5 marked up website.
Also, it may be using some new elements introduced:
<article>
<aside>
<audio>
<canvas>
<command>
<datagrid>
<details>
<dialog>
<figure>
<footer>
<header>
<m>
<meter>
<nav>
<output>
<progress>
<section>
<source>
<time>
<video>
