Highlight PDF online — free, automatic
Type words or phrases, we find every match and highlight them. Faster than manual highlighting. Free.
Manually highlighting every mention of a key term across a 200-page document is a chore. Our search-based highlighter finds every occurrence of the words you type and applies a translucent color overlay at the exact text position.
Pick your color, type your terms, download the marked-up PDF.
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Frequently asked questions
Will it find text in scanned PDFs?
Not directly — scanned PDFs have no text positions. Run OCR PDF first, then highlight.
Multiple search terms in different colors?
Single-color per pass. Run multiple passes for different categories (e.g. yellow for parties, pink for risks).