Relevanssi replaces the default search with a partial-match search that sorts results by relevance. It also indexes comments and shortcode content.

Relevanssi – A Better Search

<p>Relevanssi replaces the standard WordPress search with a better search engine, with lots of features and configurable options. You&#8217;ll get better results, better presentation of results &#8211; your users will thank you.</p>
<p>This is the free version of Relevanssi. There&#8217;s also Relevanssi Premium, which has added features. For more information about Premium, see <a href="https://www.relevanssi.com/" rel="nofollow ugc">Relevanssi.com</a>.</p>
<p>Do note that using Relevanssi may require large amounts (hundreds of megabytes) of database space (for a reasonable estimate, multiply the size of your <code>wp_posts</code> database table by three). If your hosting setup has a limited amount of space for database tables, using Relevanssi may cause problems. In those cases use of Relevanssi cannot be recommended.</p>
<h4>Key features</h4>
<ul>
<li>Search results sorted in the order of relevance, not by date.</li>
<li>Fuzzy matching: match partial words, if complete words don&#8217;t match.</li>
<li>Find documents matching either just one search term (OR query) or require all words to appear (AND query).</li>
<li>Search for phrases with quotes, for example &#8220;search phrase&#8221;.</li>
<li>Create custom excerpts that show where the hit was made, with the search terms highlighted.</li>
<li>Highlight search terms in the documents when user clicks through search results.</li>
<li>Search comments, tags, categories and custom fields.</li>
<li>Multisite friendly.</li>
<li>bbPress support.</li>
<li>Gutenberg friendly.</li>
</ul>
<h4>Advanced features</h4>
<ul>
<li>Adjust the weighting for titles, tags and comments.</li>
<li>Log queries, show most popular queries and recent queries with no hits.</li>
<li>Restrict searches to categories and tags using a hidden variable or plugin settings.</li>
<li>Index custom post types and custom taxonomies.</li>
<li>Index the contents of shortcodes.</li>
<li>Google-style &#8220;Did you mean?&#8221; suggestions based on successful user searches.</li>
<li>Support for <a href="http://wpml.org/" rel="nofollow ugc">WPML multi-language plugin</a> and <a href="https://wordpress.org/plugins/polylang/" rel="ugc">Polylang</a>.</li>
<li>Support for <a href="http://www.s2member.com/" rel="nofollow ugc">s2member membership plugin</a>, <a href="https://wordpress.org/plugins/members/" rel="ugc">Members</a>, <a href="https://wordpress.org/plugins/groups/" rel="ugc">Groups</a>, <a href="https://wordpress.org/plugins/simple-membership/" rel="ugc">Simple Membership</a> and other membership plugins.</li>
<li>Advanced filtering to help hacking the search results the way you want.</li>
<li>Search result throttling to improve performance on large databases.</li>
<li>Disable indexing of post content and post titles with a simple filter hook.</li>
</ul>
<h4>Premium features (only in Relevanssi Premium)</h4>
<ul>
<li>Indexing attachment content (PDF, Office, Open Office).</li>
<li>Improved spelling correction in &#8220;Did you mean?&#8221; suggestions.</li>
<li>Searching across multiple sites in the same multisite installation.</li>
<li>Search and index user profiles.</li>
<li>Search and index taxonomy term pages (categories, tags, custom taxonomies).</li>
<li>Search and index arbitrary columns in wp_posts MySQL table.</li>
<li>Assign weights to any post types and taxonomies.</li>
<li>Assign extra weight to new posts.</li>
<li>Let the user choose between AND and OR searches, use + and &#8211; operator (AND and NOT).</li>
<li>Export and import settings.</li>
<li><a href="https://www.relevanssi.com/user-manual/wp-cli/" rel="nofollow ugc">WP CLI commands</a>.</li>
<li><a href="https://www.relevanssi.com/knowledge-base/related-posts/" rel="nofollow ugc">Related posts</a>.</li>
<li><a href="https://www.relevanssi.com/user-manual/redirects/" rel="nofollow ugc">Redirects for searches</a>.</li>
</ul>
<h3>Thanks</h3>
<ul>
<li>Cristian Damm for tag indexing, comment indexing, post/page exclusion and general helpfulness.</li>
<li>Marcus Dalgren for UTF-8 fixing.</li>
<li>Warren Tape for 2.5.5 fixes.</li>
<li>Mohib Ebrahim for relentless bug hunting.</li>
<li>John Calahan for extensive 4.0 beta testing.</li>
</ul>


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