I have a tool where a user can generate a HTML link to my site for use on their site. The link is to a redirect page that redirects internally based on a calculation on the URL parameters. For example, link is example.com/2015-11-09 and the redirect calculates the difference between today's date and the URL parameter date. It then redirects to that URL, i.e. example.com/diff/1, tomorrow it would be example.com/diff/2.

Since the landing URL changes but original inbound link doesn't, would this type of link have a negative impact on overall site SEO?

  • I think I would be doing a rewrite and not a redirect. It would be transparent that way without any need for a question. ;-)
    – closetnoc
    Commented Nov 9, 2015 at 15:24
  • Because it's a constantly changing mapping and requires calculations, I can't do it with just rewrite. But that's not my question :) Commented Nov 9, 2015 at 18:29
  • Your .htaccess (assuming Apache) can be a script. Or you can have a script edit the .htaccess. But that assumes comfort with scripting and being a sneaky Pete. I used to do that on all my sites.
    – closetnoc
    Commented Nov 9, 2015 at 20:01

1 Answer 1


I do not think this would have a negative impact on anything, but I am not google so I know nothing. If you want to avoid the redirect you could use mod rewrite and use it to give the '2015-11-09' as parameter to your script which would show the appropriate content. This way there would not be a redirect at all.

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