: Google - aliasing two pages with URLs that are generated client-side I'm working on a website that dynamically replaces URLs during state changes so that if a user copy/pastes the URL at any

@Ann8826881

Using your example, example.com/dashboard versus example.com/dashboard?tab=something_public versus example.com/dashboard?tab=something_else_public, regardless of the resulting HTML, Google will see these as separate pages. The reason for this is simple. The URL is one of two major keys within the index. As long as each URL is unique, it is a unique page regardless of what your website does.

To correct the record, you need to use a canonical tag within the HTML head tag to indicate which page is the original.

Still using your example, example.com/dashboard?tab=something_public would have a canonical tag pointing to example.com/dashboard. In fact, if it makes it easier, example.com/dashboard can have a canonical tag pointing to itself.

Here is Google's page in this:
support.google.com/webmasters/answer/139066?hl=en
Look for the header: Indicate the preferred URL with the rel="canonical" link element

Here is the sample code on that page:

<link rel="canonical" href="https://blog.example.com/dresses/green-dresses-are-awesome" />


The advice is to use absolute URLs and not relative URLs for canonical tags.

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