Your ideas on the PDF.

Highlight, add notes and draw on pages. Your files stay on this device.

Open a PDF to start.

Up to 500 annotations per document. Undo/Redo keeps the last 50 actions.

Annotations are visually embedded in the page, not editable comments in the downloaded PDF. Original text and images are kept. Changes invalidate existing digital signatures. Unlock password-protected PDFs first.