Live search (as-you-type results appearing in a dropdown) and traditional search (press Enter, load a results page) are different interaction patterns that suit different sites and use cases. Ajax Search Pro and similar plugins implement live search. Understanding when each works better helps you make the right choice rather than defaulting to live search because it looks modern.
When Live Search Outperforms Traditional
Live search works best when the content being searched has clear, findable titles and when the visitor knows roughly what they are looking for. E-commerce product search is the clearest example: a customer knows they want “blue denim jacket” and typing those words surfaces matching products immediately. Clicking a result from the dropdown is faster than loading a full results page, browsing results, and then clicking through to a product.
Documentation and knowledge base search is another strong use case. Technical users typing a function name, error code, or feature name benefit from immediate results because they know what they are looking for. The dropdown shows the correct article title within a few characters of typing.
Navigation search on large sites – where visitors use search to navigate to specific sections rather than discover content – also benefits from live search. “Contact page”, “returns policy”, “careers” are all navigation queries where immediate results eliminate an unnecessary page load.
When Traditional Search Pages Work Better
Traditional search results pages work better when: visitors do not know exactly what they are looking for and need to browse and compare multiple results, the site has sophisticated filtering that makes more sense on a dedicated results page than a dropdown, or the content is research-oriented where visitors want to scan many results and choose.
Long-form content sites, academic databases, and research portals benefit from a full results page where visitors can see excerpts, apply filters, and evaluate multiple options simultaneously. Reducing this to a live dropdown would hurt the discovery experience by showing too few results and no filtering capability.
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The Hybrid Approach
Many sites benefit from both: a live search dropdown for immediate navigation and quick lookups, plus a full results page (powered by Relevanssi or SearchWP) that visitors reach by pressing Enter or clicking “See all results.” This satisfies both search patterns: quick lookup through the dropdown and full browsing through the full results page.
Ajax Search Pro supports this hybrid: the dropdown handles immediate results, and pressing Enter sends the query to your standard WordPress search results page with its full result set and any filtering plugins active.
Performance Considerations
Live search sends an Ajax request on each keystroke (with a small delay to avoid excessive requests). For sites with high concurrent search traffic, this additional load needs to be accounted for. Each Ajax search request hits WordPress PHP, queries the database, and returns JSON. On shared hosting, concurrent live searches can degrade performance during peak traffic. Implement a search results cache (Ajax Search Pro has built-in caching) to reduce database load from repeated identical queries.