How to Sign a PDF Digitally — Free, No Software Needed

Three Ways to Add a Signature

Every PDF signing tool gives you three input methods. Choose based on what you have available:

Draw

Use your mouse, trackpad, or touchscreen to draw your signature freehand. Closest to a handwritten signature.

Type

Type your name and choose a script font. Fastest option for documents where style doesn't matter.

Upload

Upload a photo of your physical signature (white background, black ink). Most professional-looking option.

Step-by-Step: Sign a PDF Free Online

PDF Mavericks processes everything in your browser. Your document is never sent to a server.

1
Open the Sign PDF Tool
Go to pdfmavericks.com/sign-pdf in any browser.
2
Upload the PDF You Want to Sign
Drag and drop or click to browse your files.
3
Create Your Signature
Draw with your mouse, type your name in a script font, or upload a signature image.
4
Place the Signature
Click on the page where the signature should appear. Drag to reposition, resize handles to scale.
5
Download the Signed PDF
Click "Apply Signature" then download. The signature is permanently embedded in the PDF.

Sign PDF Free

Is It Legally Valid?

Electronic signatures are legally binding for most commercial contracts, HR documents, NDAs, and service agreements under US, EU, UK, and Indian law. Exceptions include wills, real estate deeds in some jurisdictions, and court filings that require wet ink.

Legal frameworks by region:

USA: ESIGN Act (2000) — electronic signatures carry the same weight as ink
EU: eIDAS Regulation — three levels (simple, advanced, qualified)
UK: Electronic Communications Act 2000 — broadly valid post-Brexit
India: Information Technology Act 2000 — electronic signatures valid for most contracts

Security Considerations

In-browser processing

PDF Mavericks signs your document entirely in the browser using JavaScript. Your file is never transmitted to any server.

Sensitive documents

For confidential documents like medical records or financial agreements, always prefer a tool that processes locally. Avoid tools that upload to third-party servers without explicit deletion guarantees.

Tamper-evidence

A signature image embedded in a PDF does not prevent editing. For tamper-evident documents, use a certificate-based signature (DocuSign, Adobe Sign, or a qualified eSignature service).

Frequently Asked Questions

Is a digital signature on a PDF legally valid?

Yes, in most countries. Electronic signatures are legally binding under the US ESIGN Act, the EU eIDAS Regulation, and similar laws in the UK, Canada, Australia, and India. For contracts requiring a higher trust level, a qualified electronic signature (QES) with identity verification may be needed.

What's the difference between a digital signature and an electronic signature?

An electronic signature is any mark that indicates agreement — a drawn signature, typed name, or image. A digital signature is a cryptographic subset that uses a certificate to verify the signer's identity and detect tampering. Most free online tools produce electronic signatures, not cryptographic digital signatures.

Can I sign a PDF on my phone?

Yes. PDF Mavericks works in any mobile browser — Chrome, Safari, or Firefox on iOS and Android. Draw your signature with your finger on the touchscreen.

Will the PDF signature hold up if the file is later edited?

A flat signature (image embedded in the PDF) does not detect post-signing edits. If tamper-evidence is important, use a certificate-based digital signature from a tool like Adobe Sign or DocuSign.

Can I add initials or a date stamp alongside my signature?

Yes. Most PDF signing tools let you add a text annotation for the date, your initials, or a title alongside the signature image. PDF Mavericks supports placing multiple text fields and a signature on the same page.

Ready to sign your PDF?

No account, no software, no uploads. Sign directly in your browser.

Sign PDF Now