Find any highlight across all your documents
Search across every book, paper, highlight, and note in your library. Filter by color, document, or page. Results appear instantly with snippet previews and page numbers. Never scroll through 40 books to find one framework again.
How it works
Three steps to get started
Type any keyword
Press Cmd+K or click the search bar. Type any word or phrase. Highlyt searches across all document text, all highlights, and all notes simultaneously.
Filter by color or document
Narrow results by highlight color (show only key concepts), by document, or by page range. Combine filters to find exactly what you need from months of reading.
Jump to the source
Click any search result to open the document at the exact page and scroll position. The highlight is visually marked so you can see it in context immediately.
Who it's for
Built for how you actually read
Find definitions across textbooks
Search 'entropy' across 8 physics and chemistry textbooks. See every definition, every formula, every example you highlighted. Color filtering shows only 'key concept' highlights.
Cross-reference across papers
Search 'attention mechanism' across 40 NLP papers. Find every methodology, every result, every criticism. Snippet previews show context without opening each paper.
Recall frameworks from any book
"What did Atomic Habits say about habit stacking?" Type two words and the answer appears with the page number and your original color-coded context.
Frequently asked questions
How fast is the search?+
Instant. Highlyt uses PostgreSQL full-text search with GIN indexes and a custom English stemming + accent removal configuration. Results appear as you type, typically under 100ms even across hundreds of documents.
Can I search inside document text, not just highlights?+
Yes. Search covers three sources simultaneously: document text (every page of every PDF), highlight text, and notes. Results are unified and ranked by relevance.
Can I filter search results by highlight color?+
Yes. Filter by any color to narrow results. For example, search 'decision-making' and filter to amber (key concepts) to find only the frameworks you marked, not every mention of the phrase.
Your next book deserves better than a yellow highlighter
Every book and paper you read builds your knowledge. Highlyt makes sure none of it gets lost. Start your free trial and turn scattered highlights into a connected, searchable, AI-ready knowledge base.