Relevanssi replaces the default WordPress search engine with a more powerful relevance-based search that indexes post content, custom fields, categories, tags, and even PDF files to deliver better search results. The default WordPress search simply matches keywords in post titles and content, returning results sorted by date. Relevanssi instead ranks results by relevance — the more search terms a post contains, and the more prominent their placement (title vs. body), the higher it ranks. It supports fuzzy matching for typo tolerance, search term highlighting so users see why each result matched, and custom sorting by date, title, or meta values. For content-heavy sites where users rely on search, Relevanssi is the most popular search improvement plugin, serving as a simpler alternative to SearchWP and ElasticPress for sites that don’t need Elasticsearch.
The plugin stores its search index in custom database tables, separate from the WordPress posts table, and rebuilds this index incrementally as content changes. Premium adds PDF indexing, user search, and multisite network search.
Competitive Features
- Relevance ranking — results sorted by relevance score, not publish date
- Custom field indexing — search in ACF, meta boxes, and custom field values
- PDF indexing — search inside PDF document text content (Premium)
- Fuzzy matching — partial matches with typo tolerance and spelling correction
- Search term highlighting — highlight matching terms in search results
- Exclusion rules — exclude specific post types, categories, or content from search
- User search — search through user profiles and bio fields (Premium)
Key Features
- Indexing engine — rebuilds and maintains a custom search index with incremental updates
- Custom sort order — sort results by date, title, or meta field values
- Keyword stemming — match word variations (run, runs, running, ran)
- Search logs — track visitor search queries for content analysis
- Custom weights — assign different importance to titles, content, categories, and tags
- Phrase matching — exact phrase search with phrase highlighting
- Exclude from search — exclude specific posts, pages, or post types completely
Comparison with Competitors
Relevanssi Premium vs SearchWP
| Aspect | Relevanssi Premium | SearchWP |
|---|---|---|
| Relevance ranking | Yes | Yes |
| Custom field indexing | Yes | Yes |
| PDF indexing | Yes | Yes |
| Fuzzy matching | Yes | Yes |
| Search logging | Yes | Yes |
| API | Hooks + filters | Hooks + filters |
Bottom line: Both plugins offer similar core features. Relevanssi Premium includes fuzzy matching and PDF indexing in its base premium. SearchWP has a slightly more polished admin interface.
Recommended Stack: Relevanssi improves site search. For faceted filtering of search results, combine with FacetWP to let users narrow results by category, tag, or custom field.
Official Changelog
Version 4.28.3
Release Date: September 10, 2026
- New: Relevanssi now provides a modal search form.
- New: More debugging information on the admin search page.
- Fix: The search results breakdown can now include categories again.
- Compatibility: The broken Document Library Pro compatibility features were removed.
Version 4.28.2
Release Date: August 17, 2026
- Security: Fix for a vulnerability in the debugging mode.
Version 4.28.1
Release Date: August 7, 2026
- Fix: Some setting values were not displayed correctly on the searching settings page.
Frequently Asked Questions
Is Relevanssi better than default WordPress search?
Yes. Relevanssi indexes more content (custom fields, taxonomies, PDFs) and ranks results by relevance rather than date, making it much more useful for visitors.
Does Relevanssi index PDF files?
Yes. The Premium version indexes text content from PDF files in your media library, making them searchable from your site’s search box.
Can I search custom fields with Relevanssi?
Yes. Relevanssi indexes custom field values from ACF, Toolset, and other meta frameworks, making them searchable alongside regular post content.
Does Relevanssi support fuzzy matching?
Yes. Relevanssi can match partial words and tolerate typos, so a search for “advaned” can still find “advanced”.
What is the difference between free and Premium?
The free version includes relevance ranking, custom field indexing, and search logging. Premium adds PDF indexing, user search, multisite search, and premium support.
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