Does rel="canonical" support protocol relative URL?

[EquipeWeb]

I need to switch a site from http to https.  We gonna add 301 redirect all over the board.  I also use rel="canonical" to strip some queries parameter from the index (parameter uses to identify which navigation elements were use.)

rel="canonical" can be used with relative or absolute links, but Google recommend using absolute links to minimize potential confusion or difficulties.  So here my question, did you see any issue using relative protocol in rel="canonical"?

Instead of:

[DirkC]

You can use a relative canonical but the example you give is wrong, it should be href="/page1.html" The example you give looks like mis take 2 on this page http://googlewebmastercentral.blogspot.be/2013/04/5-common-mistakes-with-relcanonical.html

rgds

Dirk

[Cyrus-Shepard]

Relative URLs can be used, but it's still superior to use absolute URLs to avoid any mistakes down the line. i.e.  you miss a 301 redirect on a subdirectory and both HTTP and HTTPs versions resolve.

Relative URLs can be used in a pinch, but aren't recommended.