Private browser PDF editing

Sign a PDF online for free.

Create a visible electronic signature, place and resize it on one or more pages, then download a separate signed copy made privately in your browser.

How to sign a PDF online

1. Choose a PDF from your device.
2. Draw, type, or upload your electronic signature.
3. Add it to one or more pages, then move and resize each placement.
4. Create and download the separate signed copy.

Draw, type, or upload an electronic signature

Create a signature with a mouse or touchscreen, render typed text, or use an existing PNG or JPG image.

Private browser-local PDF signing

PDFMech creates page previews, embeds signatures, validates the output, and downloads it locally without uploading the PDF or signature.

Electronic signatures and digital signatures are different

This tool adds a visible electronic signature image. It does not create a digital certificate, trusted timestamp, identity verification, or cryptographic signature.

Sign a PDF online for free FAQ

Does PDFMech upload my PDF or signature?

No. Previewing, signature creation, placement, PDF generation, validation, and download happen locally in your browser.

Can I sign more than one page?

Yes. Open each page, add the current signature, and place it wherever required before creating the signed PDF.

Can I move and resize my signature?

Yes. Drag a placed signature directly on the page and use the size control for the selected placement.

Is this a certificate-based digital signature?

No. It is a visible electronic signature. It does not include identity validation, a digital certificate, or cryptographic verification.