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Sign PDF on Ubuntu

Works perfectly on Ubuntu. Free, private, unlimited.

Processed entirely in your browser
Sign PDF on Ubuntu
FAQ

Frequently asked questions about Sign PDF on Ubuntu

Why

Why sign PDFs digitally?

Stop printing, signing, scanning, and re-uploading documents. Our PDF signer lets you add your signature directly to any PDF in your browser — no printing required, no uploads to third-party servers, and no subscription fees.

Sign documents without printing a single page
Draw your signature with mouse or touchscreen
Type your name to generate a stylized signature
Position and resize your signature precisely
Sign multiple pages within the same document
No subscription — completely free forever
Use Cases

Who uses Sign PDF on Ubuntu?

Freelancers

Sign client contracts, invoices, and NDAs instantly without printing and scanning.

Remote Workers

Sign HR documents, offer letters, and policy acknowledgments from anywhere.

Real Estate

Add signatures to purchase agreements, lease contracts, and disclosure forms.

Small Business

Sign vendor agreements, proposals, and quotes without expensive e-signature subscriptions.

How It Works

Browser-based processing in 4 steps

No servers involved. Your files never leave your device.

01

Upload your PDF

Drop the document you need to sign. It loads without leaving your device.

02

Create your signature

Draw your signature with your mouse/trackpad, or type your name for a generated style.

03

Place and resize

Position your signature exactly where it needs to go. Resize for the perfect fit.

04

Download signed PDF

Save your signed document. The signature is embedded directly in the PDF.

Sign sensitive documents without exposure

Your signature image is never stored on any server
Document contents remain on your device throughout the process
No account means no profile linking your signature to your identity
Perfect for signing NDAs, where confidentiality starts at signing
Signature data is cleared from memory when you close the tab

Pro tips for Sign PDF on Ubuntu

Use a mouse or stylus for the most natural-looking drawn signature.
On mobile, use your finger on the touchscreen for a quick signature.
Type your name if you prefer a clean, consistent digital signature.
You can sign multiple pages — just navigate to each page that needs a signature.
After signing, use Protect PDF to lock the document from further editing.

You might also need

Protect PDF
Lock down your documents securely.
Watermark PDF
Stamp your PDFs. Claim your work.
Compress PDF
Shrink PDFs without losing quality.