Is signing a PDF online legally valid?

For most personal, business and administrative documents a digital signature image is accepted. If the document falls under strict regulatory requirements such as eIDAS in Europe or ESIGN in the US, verify the specific standard required for your case.

Can I sign a PDF on my phone?

Yes. The sign PDF tool works in mobile browsers. On a touchscreen you can draw your signature with a finger for a more natural result.

Does the signed PDF look different from the original?

Only the signature is added. The rest of the document remains unchanged. The result is a standard PDF with your signature placed at the position you chose.

Can I sign multiple pages in the same document?

Yes. You can place your signature on as many pages as needed before downloading the final file.

2026-05-07 · PDFTools

How to Sign a PDF Online for Free

Printing a document just to sign it and scan it back is one of those workflows that still happens far too often. Signing a PDF online removes all of that. You upload the file, place your signature and download a signed copy ready to send — no software needed, no paper involved.

When you need to sign a PDF online

The most common cases are contracts sent by email, rental agreements, consent forms, freelance proposals, onboarding paperwork and any other document where someone needs your signature before work can proceed. Doing it online means you can respond the same day instead of waiting for a printer or a scanner.

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How to add your signature to a PDF

Open the sign PDF tool, upload the file and choose how you want to create your signature. You can draw it with a mouse or trackpad, type your name and pick a style, or upload an image of your handwritten signature. Once it looks right, place it on the page, adjust the size and position, and download the signed document.

What type of signature is right for your document

For most day-to-day documents — rental agreements, client approvals, internal forms, personal authorizations — a typed or drawn signature is entirely sufficient. If the document requires a legally certified electronic signature under a specific regulation, check what your country or sector requires. For the vast majority of business and personal use, a clearly placed signature image is accepted without question.

Signing a PDF on mobile

The tool works in mobile browsers, which means you can sign directly from a phone or tablet. On a touchscreen, drawing your signature with a finger gives a more natural result than using a mouse. This is useful when you receive a document to sign while away from a desk and need to return it quickly.

What to do after signing

Once you download the signed PDF, send it directly from your email or storage app. If the document also needs a password before sharing, you can protect the PDF after signing. If you filled out a form before signing it, flattening the fields first and then adding the signature gives you the cleanest final version.

Try it yourself, it's free:

Sign a PDF online now