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All tools Sign, fill and mark up

Draw on, highlight and comment on a PDF

Mark up pages with a pen, highlighter, rectangles, ellipses, arrows, lines and text in any script, highlight or strike out selected text, and pin notes. They are saved as comments other PDF apps can change, or made part of the page if you prefer.

Yes. Annotate PDF is one of the everyday tools, free forever, with no account and no watermark. Pricing

How to do it

  1. Open your PDF and double-click a page to open it large.
  2. Pick a tool from the drawing bar and draw. Everything can be selected, moved, resized and undone, also with the keyboard.
  3. Press Download.

You do not have to take our word for it

Questions

Can other programs change my comments?
Yes. Drawings, shapes, text boxes, highlights and notes are saved as real PDF comments. To fix them into the page instead, turn on Make drawings part of the page; notes always stay comments.
Can I mark up text?
Yes. Select text on a page to highlight it, underline it or strike it out.
Can I do it all from the keyboard?
Almost all of it. Every tool has a single-letter shortcut, Tab steps through the drawings, and the arrow keys move and resize them. Only drawing freehand with the pen needs a pointer.
Is it free?
Yes. Annotate PDF is one of the everyday tools, free forever, with no account and no watermark.