Choose a PDF, then drag across the text you want to highlight on the page preview — the mark snaps to the text line you drag across, so it sits exactly over the words even if your drag is slightly off. On scanned pages (no text layer) and over empty space, the mark stays exactly where you drag. Runs fully in your browser — nothing is uploaded, and your original file is never changed.
Mark what matters: drag across any text and it glows in the downloaded PDF, exactly where you dragged.
100% free · No sign-up · No daily limits · No watermarks · Processed in your browser — files never leave your device
Highlight passages in a PDF by dragging across them on the page preview: translucent yellow, green or pink marks land exactly where you drag, on as many pages as you need.
Preparing for a meeting, you highlight the three clauses of a contract that need discussion — yellow for the dates, pink for the money — and send the marked copy round before anyone arrives.
Each drag becomes a translucent rectangle drawn over that exact region of the page, in the colour you picked, using the transparency the PDF format defines — so the text underneath stays readable and selectable, and the highlight prints like a real marker pen’s. When the page has a text layer, your drag snaps to the text lines it covers — one tidy mark per line, aligned to the words themselves, and listed as “snapped to text”. On pages without text (scans, photos) placement is by region, exactly where you drag.
Yes — the mark is a translucent layer above the page, so readers can still select, copy and search the words beneath it.
Yes. You are marking a region of the page, so scans highlight exactly like born-digital pages.
Before downloading, use the ✕ beside it in the list. Afterwards the highlight is part of the downloaded copy — your original file is unchanged.
Yellow is the classic and prints lightest. Green and pink help when categories matter — one colour per theme reads clearly.
No — highlighting happens entirely in your browser.