Mark up any PDF with colour highlights, then pin notes and draw where they matter. It all happens in your browser, so the file never leaves your device.
Open your PDF to start Free to edit · no account · $1 only when you downloadHighlighting is how you separate the parts that matter from the wall of text around them. Open your PDF here and drag over any passage, figure or clause to lay a translucent colour band across it — yellow to flag, another shade to sort by theme. Because the highlight sits on top of the real page rather than re-flowing it, the layout underneath stays exactly as the author set it, and you can drop as many marks as a dense contract or study guide needs.
A highlighter on its own only points; the useful markup is when you pair it with the reason. So beside each highlight you can pin a note explaining what caught your eye, or switch to freehand draw to circle a number, bracket a paragraph or scrawl a tick. One document ends up carrying the colour, the comment and the sketch together, which is far easier to hand back or revisit than a page of loose highlights with no context.
Everything above is free. You highlight, annotate and draw as much as you like, and only pay a single $1 when you want to download the marked-up PDF — no subscription, no watermark stamped across your notes, and no card kept on file for a surprise renewal. There is no sign-up either: the editor runs entirely on your machine, so a confidential brief or a graded assignment is read and marked locally and never uploaded to anyone's server.