Choose a PDF and draw on it freehand — sketch, circle, underline by hand — with the pen colour and thickness you pick. Your strokes are added as a transparent drawing layer over each page, so the original text stays crisp and selectable. Runs fully in your browser — nothing is uploaded.
Sketch on a PDF like paper: circle a paragraph, arrow a chart, scribble a margin note — your pen strokes ride on top of the untouched page.
100% free · No sign-up · No daily limits · No watermarks · Processed in your browser — files never leave your device
Draw freehand on a PDF with a pen in your colour and width: sketch, circle and scribble on the page preview, undo strokes, and save them as a drawing layer over the untouched original pages.
A teacher marking homework circles two answers in red, ticks a third, and arrows a margin comment — on the PDF itself, in the browser, without printing a single sheet.
Your strokes are captured as point paths in true PDF coordinates. On download, each page’s strokes are painted once onto a transparent image that is laid over the original page, so the document’s own text and vectors stay exactly as they were — selectable, sharp and searchable — while your ink rides on top. Pages you never drew on are copied untouched.
No. The original page is copied byte-for-byte and your strokes are added as a transparent layer above it — text stays selectable underneath.
Undo removes whole strokes, most recent first, and Clear this page removes a page’s set. There is no pixel eraser — redraw is the honest fix.
The layer is rendered at twice the page resolution, so printed strokes stay crisp while the file stays reasonable. The page beneath remains fully digital.
Yes — navigate and draw; the counter tracks strokes across the document, and each page keeps its own set.
No. Drawing and saving happen entirely in your browser.