Stamp Tool•100% Private (No Uploads)

Add Signature to PDF

Position and stamp signatures onto contracts, invoices, and legal releases.

100% private in-browser digital signing. No signatures are sent to external servers.

Choose File

Sign above with your mouse, pen, or finger

Pen Color:

Include digital date stamp (9/26/2026)

Cryptographic Verification Audit Ready

How to Use Add Signature to PDF

Upload your PDF contract.

Select your signature.

Click directly on the signature line to place it, then download.

Yes, navigate between pages and place signatures on as many pages as needed.

Free, client-side PDF utilities to organize, convert, and protect documents.

Combine multiple PDF documents into a single organized file with easy drag-and-drop reordering.

Split large PDF files into smaller documents by custom page ranges or individual pages.

Batch merge dozens of PDF files into a single unified document with custom sequencing.

Quickly join two or more PDF files into a single consolidated file in seconds.

Separate every single page of your PDF into its own standalone PDF document.

Divide documents into multiple chunks or chapters by custom page intervals (e.g. 1-5, 6-10).