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Sign and annotate your PDF

Add a drawn signature, ink, highlights, and text notes. Your file stays on this device; edits live only in this tab. Original files are never overwritten.

No uploads. Existing page annotations or links, encrypted PDFs, forms, and digital signatures are not supported. Use a flattened, noninteractive source copy.

Discard this work?

This removes the PDF, all markup, undo history, and generated downloads from this tab. Original files and downloaded copies are unchanged.

How to sign and annotate a PDF

  1. Add one supported PDF and wait for local validation.
  2. Draw a visual signature, add ink, highlights or text notes, and edit their placement.
  3. Review the limitations, generate a flattened PDF, then choose Download PDF.

Your edits live only in this tab. Signatures are visual marks, not digital signatures or identity guarantees. Existing page annotations (including links), encrypted files, forms and digital signatures are not supported. Reopening a downloaded copy does not restore editable markup.

PDFBurrow processes your documents in this browser, without uploading them.

Files stay in this tab's memory. Refreshing or closing the tab loses your work; original files and downloaded copies are unchanged. Browser leave warnings are best effort.

Experimental build: provisional workload limits are enforced, but are not device-tested safety guarantees. Complex files may still exhaust browser memory. Offline use is not promised.

Source codePrivacyLicenses/noticesWorkload limits

These links open in a new tab without discarding your work.

Discard this work?

Changing tools or returning Home clears inputs, settings, outputs and unlocked signing keys from this tab. Save any encrypted key backup and proof first. Original files and downloaded copies are unchanged.