I have a site that has both http:// and https:// versions indexed, e.g. https://www.homepage.com/ and http://www.homepage.com/. How do I de-index the https// versions without losing the link juice that is going to the https://homepage.com/ pages?

[fthead9]

I can't 301 https// to http:// since there are some form pages that need to be https:// The site has 20,000 + pages so individually 301ing each page would be a nightmare. Any suggestions would be greatly appreciated.

[john4math]

Add canonical tags to all the https pages that have a http counterpart pointing to the http version.  Here's the original Google Webmaster Blog post about canonical tags: http://googlewebmastercentral.blogspot.com/2009/02/specify-your-canonical.html

[fthead9]

Thanks John for the suggestion. Unfortunately the https pages aren't separate pages from the http version; one is secure and one isn't but the actual code is identical. The rel canonical tag would appear on both the http and https version. Are you sure Google wouldn't have any issues with the http pages having a rel canonical tag that points to itself?