A rel="alternate" attribute value specifies that the linked page is an alternative version of the current page.
The alternative can be in terms of device type, language, country, etc.
A rel="alternate" on an <a> tag.
This link is to a Microsoft page for US users.
Go to <a rel="alternate" href="https://www.microsoft.com/en-us"
target="_blank">Microsoft US</a>
The rel attribute defines the relationship between the current page and the linked page or resource.
The rel="alternate" value tells search engines the linked page is an alternate to the current page.
This can be another page version in terms of device type, language, country, and more.
<tagname rel="alternate" />
These elements accept the alternate value on the rel attribute.
| Elements | Description | |
|---|---|---|
| <a> | Specifies an anchor link -- see example above | |
| <area> | Creates clickable areas inside an image map. | |
| <a> | Specifies an anchor link |
Here is when rel support started for each browser:
 Chrome
|
6.0 | Sep 2010 |
 Firefox
|
4.0 | Mar 2011 |
 IE/Edge
|
12.0 | Jul 2015 |
 Opera
|
11.1 | Mar 2011 |
 Safari
|
5.0 | Jun 2010 |
