In an SEO audit, we discovered two sets of URLs hinting to duplicate content.The only way the two sets distinguish each other is that one ends with a slash and the other one doesn’t. What should we do?
JOHN MEULLER (Webmaster Analyst from Google):
For the most part, you don’t need to do anything because we can figure this out. Having two URLs instead of one URL is not something that would cause significant duplicate content issues. But if you’re in SEO and you like to have things under control, you probably have one version that you prefer. And if that’s the case, then you can use the usual canonicalization tools to help us pick that one as the one that we show in the search results. So that’s redirecting, like you mentioned. Rel=canonical is a great approach here, because sometimes it’s tricky to redirect things like that. So those are probably the two things I’d focus on. Obviously, making sure that you’re consistently using the right URL within your website for linking and within your sitemap file are also there are things to do.