Sign PDF Documents Online — Free & Private
Signing PDF documents used to require printing, signing by hand, scanning, and emailing back. The DoctorDocs PDF Signer eliminates every one of those steps. Open your PDF, draw or type your signature, place it on the page, and download the signed document — all within your browser.
Unlike cloud-based e-signature services that upload your sensitive contracts to third-party servers, DoctorDocs processes everything locally using client-side JavaScript. Your NDAs, rental agreements, employment contracts, and legal filings never leave your device. No account needed, no subscription, no file size limits.
Key Capabilities
Three ways to sign
Draw freehand with a mouse, trackpad, or touchscreen; type your name in one of four handwriting-style fonts (Elegant, Classic, Modern, Casual); or upload a photo of your physical signature.
It's a visual signature, not a cryptographic one
The signature is stamped onto the page as an image, the same way a scanned wet signature would look on paper. If a document specifically requires a PKI-based digital signature, check what your counterparty or jurisdiction actually needs first.
100% local processing
Your PDF and signature are processed entirely in your browser. Nothing is uploaded to any server — relevant for NDAs and confidential contracts.
Multi-page placement
Navigate through a multi-page PDF and place the signature on any page — useful for contracts that need a signature on more than one page.
How to Use
Upload your PDF
Open the PDF Sign tool and drag-and-drop or click to upload the document you need to sign. Any PDF file is accepted.
Create your signature
Draw your signature with your mouse or trackpad, type it using a handwriting font, or upload an image of your physical signature.
Place, resize, and download
Click anywhere on the page to place your signature. Resize and reposition as needed, then download the signed PDF. Your file never leaves your browser.
Common Use Cases
- Legal ProfessionalsSign engagement letters, court filings, and settlement agreements without printing a single page.
- Freelancers & ContractorsTurn around client contracts and SOWs in minutes instead of days.
- Real EstateSign rental agreements, lease addendums, and property disclosures from any device.
- HR & People OpsGet offer letters, non-competes, and onboarding forms signed without a paid e-signature subscription.
Frequently Asked Questions
Is my signature and document secure?
Yes. The signing process runs entirely in your browser. Your PDF and your signature are never uploaded to any remote server, ensuring total privacy for sensitive contracts and agreements.
How can I add my signature?
You can draw your signature using a mouse or touch screen, type it using built-in handwriting fonts, or upload an image of your physical signature to stamp onto the PDF.
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Trusted by students, freelancers & businesses
Real feedback from people who use DoctorDocs every day.
"My clients are often in different cities and getting wet signatures on sale agreements was a logistical nightmare. This lets them sign from their phone, the output is a proper PDF, and I've never had a document rejected by a registrar's office."
"I sign vendor agreements and MoUs almost every week. I was paying for a DocuSign subscription I barely used. Switched to this, saved the money, and honestly the signing experience is smoother for the other party too."
"Client contracts used to require me to print, sign, scan, and email back. Now I draw my signature once, save it, and any new contract is signed and returned in about 30 seconds. It's the single biggest workflow improvement I've made this year."