Draw freehand, circle things and add arrows on a PDF with your mouse, finger or pen
Processed in your browser. Nothing is uploaded. Updated on 24 Oct 2026.Sometimes a circle and an arrow say more than a paragraph. Draw on any page of a PDF with a mouse, a finger or a stylus, in six colours and four line widths, or use the Ellipse, Box and Arrow tools for neat shapes. Every stroke is saved as a real PDF drawing annotation, so it prints, and other readers can still select or delete it. The file stays on your device.
Drop the PDF on the page; Pen is already chosen, in red.
Draw on the page with a mouse, a finger or a stylus; pick a colour and a line width first.
Switch to Ellipse, Box or Arrow to circle or point at something neatly.
Press Save PDF, then Download.
Reviewing a document means marking it: a highlight on the figure that is wrong, a circle round a missing signature, an arrow to the clause that matters, a note in the margin. Annotate PDF does all of that on the PDF itself, in your browser.
Seven tools. Highlight marks words like a highlighter pen. Pen draws freehand with a mouse, a finger or a stylus. Box, Ellipse, Arrow and Line draw neat shapes. Note places a sticky-note icon with your comment inside. Marks come in 6 colours and 4 line widths, and the colour starts on the usual choice for each tool: yellow highlights, red pen, blue boxes.
Real annotations. Every mark is saved as a standard PDF annotation with its own appearance, the way Acrobat stores comments. Acrobat, Apple Preview, Edge, Chrome and Firefox show them, list them as comments, and let the reader reply to, move or delete them. The original page content is never changed, so the text stays searchable. To fix the marks into the page instead, run the result through Flatten PDF.
The rest of the article, and all 6 questions about Annotate PDF, are on the Annotate PDF page.
Drop the PDF on this page and page 1 opens with Highlight chosen. Drag across words to highlight them, or pick Pen, Box, Ellipse, Arrow, Line or Note and draw. Tap any mark to give it a comment. Press Save PDF and Download; there is no sign-up, watermark or upload.
Yes. Every mark is written as a standard PDF annotation (Highlight, Ink, Square, Circle, Line or Text) with its own appearance, which is how Acrobat stores comments. Acrobat, Apple Preview, Microsoft Edge, Chrome and Firefox show them, list them as comments and let the reader reply to, move or delete them.
A reader can select and delete any annotation, because annotations sit on top of the page rather than in it. To fix the marks into the page so they cannot be removed, open the saved file in Flatten PDF, which turns every annotation into ordinary page content.
Seven: Highlight, Pen for freehand drawing, Box, Ellipse, Arrow, Line and Note for a sticky comment. Marks come in 6 colours and 4 line widths, and any mark can carry a written comment of up to 2,000 characters. Up to 500 marks can be saved in one file.
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