WordPress’s default search is basic — it only matches post titles and content. For many sites, this isn’t enough. Users searching for custom post types, custom fields, or specific taxonomy terms won’t find what they’re looking for. Customizing the search behavior dramatically improves the user experience and keeps visitors on your site longer.
This guide covers how to customize WordPress search to return better, more relevant results.
Extending Search to Custom Post Types
By default, WordPress only searches posts and pages. If your plugin registers custom post types like ‘bookings’, ‘courses’, or ‘listings’, they won’t appear in search results unless you explicitly include them. Use the pre_get_posts filter to modify the main search query and include your custom post types.
Check that the query is the main query and that it’s a search query before modifying it. Add your custom post type slugs to the ‘post_type’ parameter. Remember that the user’s existing search parameters should still be respected.
Searching Custom Fields and Meta
WordPress doesn’t search custom field values by default. If your content stores important data in custom fields — like event dates, prices, or locations — those values are invisible to search. Use the posts_search filter to extend the SQL WHERE clause with meta query conditions.
A simpler approach is to use a plugin like SearchWP, which extends search to cover custom fields, taxonomies, and even PDF content without custom coding. For developers, extending the search query directly provides more control.
Search Results Ordering
Default WordPress search orders results by date. For many sites, relevance-based ordering would be more useful. Use the posts_orderby filter to modify the ORDER BY clause based on search term frequency, word count, or other relevance signals.
A simple relevance algorithm counts how many times the search term appears in the title and content, and orders results by that count descending. More sophisticated approaches use TF-IDF or database fulltext indexes.
Search Exclusions
Exclude certain content from search results using the pre_get_posts filter. Common exclusions include password-protected posts, specific categories, certain post statuses, and pages that shouldn’t appear in search results like thank-you pages or privacy policies.
Also exclude search results from indexing by setting noindex on search result pages using the wp_head action or an SEO plugin.
Search Form Customization
The default WordPress search form is minimal — a single input field. Customize it with the get_search_form filter. Add post type filters, category dropdowns, or date range selectors to help users narrow their search before submitting.
Use the search form to suggest popular searches, show recent search queries, or provide autocomplete suggestions. These features improve the search experience and help users find content faster.
The Bottom Line
Customizing WordPress search transforms it from a basic feature into a powerful content discovery tool. Include custom post types, extend search to custom fields, improve result ordering, and customize the search form. A better search experience keeps visitors engaged and helps them find the content they need.
