How to Sign a PDF Without Printing It (Free)

You never need to print a PDF to sign it. Printing, signing in ink and scanning it back produces a bigger, blurrier, unsearchable file with no extra legal weight. Here is exactly how to sign a PDF without printing it, on a computer or a phone.

How do I sign a PDF without printing it?

Open a browser signing tool such as Slate PDF’s Sign PDF, add the document, then draw your signature, type your name in a handwriting font, or upload a photo of your ink signature. Click where it belongs on the page, adjust the size and download the signed PDF. It is free, needs no account, and nothing is uploaded.

1. 1Open Sign PDF and add the document.
2. 2Pick how you want to sign: Draw, Type, or Image.
3. 3Create the signature — draw in the box, type your name, or upload a picture of your existing signature.
4. 4Pick the page, then click where the signature should go on it and make it bigger or smaller with the zoom buttons.
5. 5Click Sign & Download PDF.

The three ways to create a signature

A handwritten look and a rapid typed signature serve different situations, so it helps to know what each option produces:

Signing more than one place, or adding the date

Sign PDF places one signature per pass, but it keeps building on the signed version: place the first signature and download, then choose the next page, place it again and download once more. The last file you download contains every signature. For a date, a printed name or initials typed as text, use Edit PDF, whose Add text button places new text anywhere on the page.

Do I still need to print if the sender wants a wet signature?

Most documents are fine with an electronic signature. When someone asks for your “real” signature, the image method covers you: sign once with a pen, photograph it, upload the photo, and place it. The document is still delivered digitally. If the sender genuinely requires ink on paper, for example some property or court documents, no tool changes that — ask before you go to the trouble.

Making the signature land in the right place

• Place it so the bottom of the signature sits on the line, not floating above it or crossing the text
• Resize it to roughly the height of two lines of text; larger looks like shouting
• Sign in the order the document lists — some forms reject signatures that arrive out of sequence
• On a touch device, draw with a stylus or your finger for a smoother line than a mouse gives
• Open the downloaded file and look at the signed page before you send it

What goes wrong, and the fix

• A grey or white box shows around a photographed signature: the photo’s background is placed with it. Photograph on bright white paper in good light, crop tightly, or use a PNG with a transparent background.
• The image will not load: use a PNG or JPEG. Convert HEIC or WebP photos first.
• The PDF will not open for signing: it is password-protected. Remove the password with Unlock PDF if you are entitled to, then sign.
• The signature looks jagged: it was drawn small and enlarged. Draw it bigger and scale it down instead.

Is an electronic signature legally binding?

In most jurisdictions, including the US under the ESIGN Act and the EU under eIDAS, an electronic signature on a PDF is valid for everyday agreements such as contracts, consents and approvals. A drawn, typed or image signature is a simple electronic signature — not a certificate-based digital signature — so if a document specifically requires one of those, use the platform the sender provides. For the full process, see how to sign a contract and send it back.