Annotate PDF
Draw on your PDF — pen, highlighter, shapes and sticky notes. Everything is burned in as crisp vector marks, all in your browser.
Pick a tool, then draw on the page. Switch to Select to move, resize or delete a mark.
Annotate PDF
Why annotate a PDF?
Reading a PDF is one thing; responding to it is another. You want to circle the figure that looks wrong, point an arrow at the clause that matters, highlight the lines to revisit, or leave a note explaining a change. Marking the document directly is far clearer than describing your comments in a separate email, and the person you send it to sees exactly what you meant, right on the page. Pick a tool and draw straight onto the page. The pen gives you freehand strokes, the highlighter lays down a translucent sweep over the text, and the shape tools add rectangles, ellipses, straight lines and arrows for pointing things out. Sticky notes let you write a short comment in a little coloured box. Each mark can be moved, resized or deleted, and when you work with several files, each one keeps its own annotations while untouched files download unchanged. Your marks are drawn as crisp vector lines and burned into the page on download, so they stay sharp at any zoom. They sit on top of the original, which is left intact, so the document's own text stays selectable. It all happens in your browser, so the PDF never leaves your device.
How do I annotate a PDF for free?
Open your PDF and mark it up: draw with the pen, sweep the highlighter over a passage, add a rectangle, ellipse, line or arrow, or drop a sticky note. Your marks are burned in as crisp lines and download as part of the file. It all runs in your browser, so nothing is uploaded.