Auto-insert links with rel=”canonical” attribute into the headers of your filterable pages. This will inform the search engines of your preferred version for similar or duplicate pages and help avoid indexing large amount of pages with almost identical content.
By default the canonical URL will be set to the filterable page itself (for example, shop page, or product category archive), without any parameters added. Users of the premium version can use the Include in canonical links option to add the filters which they wish to index.