Sign PDF Online: Add a Signature Without Printing

Printing a form, signing it, scanning it and emailing it back is a small chore that adds up. The Sign PDF tool lets you add a signature to a PDF in the browser, then download the signed copy.

#What this kind of signature is

A visible signature shows that someone has marked the document. It is the digital equivalent of signing a printed page. It is not the same as a cryptographic digital signature or a certificate-backed e-signature.

For everyday use — a permission slip, an internal form, a letter, a timesheet — a visible signature is usually enough. For contracts, regulated submissions or anything where the recipient asks for a "qualified" or "certified" signature, use a dedicated e-signature service.

#How to sign a PDF

1. Open Sign PDF and upload the document.
2. Add your signature.
3. Apply it to the page.
4. Download the signed PDF.

Your original file is left untouched; the signed version is a new download.

#Where to place the signature

• Put it on the line or in the box the document provides.
• Match the size to the page rather than filling the space.
• On multi-page documents, sign the pages that actually require it, including any initialled clauses.
• Check that the signature does not cover important text or a date field.

#Flat PDFs and fillable forms

A flat PDF is essentially a picture of a page. The signature is applied as an overlay. A fillable PDF has interactive form fields, so complete those first and sign last. Once the signature is applied, it becomes part of the page, so make any remaining corrections before you sign.

#Keep an unsigned original

It is worth keeping the unsigned source alongside the signed copy. If a detail changes or the signature needs redoing, you can start from the clean file instead of editing a signed one. Temporary files created by the tool are cleaned up automatically.

#Frequently asked questions

Is this a legally binding e-signature? It is a visible signature. Legal requirements vary, and formal contracts may need a certificate-backed e-signature.

Can I sign more than one page? Yes, depending on the tool's options and the document.

Will the original PDF change? No. A new signed copy is created for download.

Does it work with fillable forms? Complete the fields first, then add the signature.

Is there a cost? No. No signup and no watermark.