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Overview of Content Experiments

Experiments and SEO Ranking

To ensure that serving your variation pages does not have a negative impact on your site's SEO rankings, you can use the rel="canonical" link attribute on your variation pages. rel="canonical" is a signal to search engines that the content of your variation pages is essentially the same as that of your original page, and that you would prefer that search engines index your original page rather than the variations you're using in your experiment.

Learn more about rel="canonical".

In addition, if you leave your variation pages in place after your experiment has ended (e.g., to accommodate users who have bookmarked those pages or if you plan to use them again for another experiment), and you're redirecting from those variations back to your original URL, you can use:

  • A server-side 301 redirect. A permanent redirect from your variations back to your original URL is a signal to search engines to index your original page rather than your variations. Use this option if you are leaving your variation pages in place to accommodate users who may have bookmarked those pages during the exeriment.

  • A server-side 302 redirect. A temporary redirect from your variations back to your original URL is a signal to search engines that they should index the original page, but check back periodically to see whether they should index the variation page. Use this option if you plan to use your variation-page URLs again and want to have that content indexed when those pages are live.
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