When adding parameters to Webmaster Tools for URLs that I don't want indexed, should I add the parameters with actual brackets, example:


or should add in the URL encoding characters which are showing in the SERPs URL like so:



1 Answer 1


Googlebot expects URL parameter names to be escaped when adding them via Google Webmaster Tools.

I ran an experiment on my site where I created a page with two different URL parameters: unesc% and escap%. I created page for the experiment on my site. On it uses the parameters with four values each

I then added escap%25 and unesc% to Google Webmaster Tools as "Effect: None, Crawl: Representative URL" and sat back to watch what would happen.

The first thing I noticed was that Googlebot actually came to my site and crawled all the parameters, despite the webmaster tools setting. This is either because:

  • There is a bug in Googlebot where it doesn't respect the settings
  • They designed Gogolebot not to respect the settings
  • It takes some time for Googlebot to become aware of the settings. (I put the settings in before Googlebot had a chance to crawl, but it started crawling within an hour).

After Googlebot crawled, webmaster tools didn't report that Googlebot was monitoring any matching URLs. I figured that it would take some time before GWT started showing what Googlebot was actually doing so I waited. A couple weeks later I now get this:

enter image description here

I would still suggest adding both to your site just as a precaution (I'm only linking to the escaped version of the URL, I'm not user if it would be different if I linked to the un-escaped version).

Here is the testing that I had done earlier:

I tested it by adding both, just to see how the tool would react.

Google webmaster tools, url parameters with encoding

I thought that it might give me an error for one of the two, or possibly canonicalize them to the same thing. I could actually add both of them (as you can see from the screenshot).

That leads me to guess that the un-escaped one is the one that would match while Googlebot is crawling. But, that is just a guess. Since it allows you to add both, you might as well just go ahead and add both to be safe.

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