How to Sign a PDF on Mac (Free, Without Acrobat)
Add your signature to a PDF on Mac using Preview or your browser — no Adobe Acrobat, no account needed. Draw, type, or upload a signature image.
Mac has a strong built-in signature tool in Preview — but it lacks controls for signature size, position precision, and multiple signer fields. FixMyPDF's sign tool offers full control in Safari or Chrome, plus the option to type, draw, or upload your signature image.
Method 1: Preview (Built-In, Quick)
Open the PDF in Preview. Click the Markup Toolbar button (pencil icon) → Signature → Create Signature. Draw with your trackpad, sign on a piece of paper and hold it up to your webcam, or type your name. Then click your signature to insert it and drag to position.
Method 2: FixMyPDF Sign Tool (More Control)
Go to fixmypdf.in/tools/pdf-sign in Safari or Chrome. Upload your PDF, then draw your signature with a mouse or trackpad, type your name in a signature font, or upload an image of your signature. Position it precisely on the page and download the signed PDF.
Drawing vs Typing vs Uploading a Signature
A drawn signature looks handwritten and personal — best for formal documents. A typed signature in a cursive font is faster and looks professional. An uploaded image of your actual handwritten signature on white paper is the most authentic looking — photograph or scan your signature and upload the image.
Legal Validity of Electronic Signatures on Mac
In most jurisdictions (US, EU, UK, Australia), an electronic signature has the same legal weight as a handwritten one for most document types under laws like the US ESIGN Act and EU eIDAS. For highly regulated documents (mortgages, wills, notarised documents), a legally certified e-signature platform may be required.
Signing Multiple Pages
If a document requires initials on each page plus a signature on the final page, use the sign tool to add your initials to each applicable page and your full signature on the last. Our tool lets you add multiple signature elements before downloading.
Privacy on Mac
The PDF and your signature image are processed entirely in your browser. Neither the document content nor your signature is uploaded to any server. This is important for legal documents, NDAs, and contracts where confidentiality matters.
After Signing
Once signed, you might want to password-protect the signed PDF to prevent unauthorised modification, or compress it if it's large before emailing. Both tools are free and browser-based on Mac.
Try Sign PDF Now — Free
Browser-based, private, and instant. No account or software required.
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