Mark Jaquith

This simple plugin (no configuration) redirects <code>?s=FOO</code> search URLs to the nicer <code>/search/FOO</code> versions. Requires pretty permalinks.

Nice Search

Redirects search URLs from ?s=FOO  to /search/foo and converts spaces to + symbols

Web Guy

Adds the canonical link to your site (<a href="https://wikipedia.org/wiki/Canonical_link_element" rel="nofollow ugc">Learn More</a>).
Activate and then set your permalinks to “Post name” under Settings > Permalinks. That’s it.
Verify that it’s working correctly with the <a href="https://addons.mozilla.org/addon/canonical-link/" rel="nofollow ugc">Firefox add-on</a>.
Supports the ability to customize the canonical link for any specific page, post, or even custom post types (including WooCommerce Products and bbPress Topics).

Canonical Link

Adds the canonical link to your site (https://wikipedia.org/wiki/Canonical_link_element). Activate and then set your permalinks to "Post name&quo …

Nice Search vs Canonical Link