Sign PDF
PDF → PDF
Add digital signatures to documents
About this tool
About Sign PDF
Sign PDF is a free, browser-based tool that lets you add electronic signatures to PDF documents. You can draw your signature with your mouse or touchscreen, type your name to generate a cursive signature, or upload an image of your actual handwritten signature. It supports PDF → PDF signing. Everything runs locally on your device, so your files and signatures are never uploaded to a server. There's no sign-up, no watermark, and no limit — just open Sign PDF, add your signature, and get a signed document instantly. Perfect for contracts, agreements, forms, and any documents that require a signature.
How to use Sign PDF
1
Upload PDF
Drag and drop your PDF file or click to browse. Supports files up to 100MB.
2
Add Signature
Draw, type, or upload your signature. Position it exactly where you need it on the document.
3
Download Signed PDF
Save your PDF with the signature embedded. The signed document is ready for sharing or archiving.
Key features
Three Signature Methods
Draw your signature with mouse/touch, type your name for cursive signature, or upload an image of your handwritten signature.
100% Private & Secure
Sign PDF processes your data locally in the browser. Your files and signatures never leave your device.
No Printing or Scanning
Sign documents digitally without the need to print, sign, scan, or mail paper copies.
Legally Valid
Electronic signatures created with our tool are legally valid and accepted in most jurisdictions.
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Professional PDF Signing Applications
Trusted by businesses, legal professionals, and contractors worldwide
Business Contracts
Sign business contracts, agreements, and NDAs electronically for faster deal closure.
Example: Sign a partnership agreement PDF and send it back to the other party immediately.
Legal Documents
Sign legal documents, court filings, and affidavits with electronic signatures.
Example: Sign a legal contract PDF for court submission without printing.
Invoices & Receipts
Sign invoices, receipts, and financial documents for official record-keeping.
Example: Sign an invoice PDF to acknowledge receipt of payment.
Legal Agreements
Sign legal agreements, terms of service, and privacy policies with electronic signatures.
Example: Sign a terms of service agreement PDF for a new software subscription.
Forms & Applications
Sign application forms, registration forms, and official documents online.
Example: Sign a job application form PDF before submitting it electronically.
Business Proposals
Sign business proposals, quotes, and estimates with electronic signatures.
Example: Sign a project proposal PDF to approve the terms and conditions.
Academic Forms
Sign academic forms, permission slips, and consent forms for educational purposes.
Example: Sign a field trip permission slip PDF for your child's school.
Medical Forms
Sign medical consent forms, patient agreements, and healthcare documents.
Example: Sign a medical consent form PDF before a procedure.
Real Estate Documents
Sign real estate contracts, lease agreements, and property documents.
Example: Sign a lease agreement PDF for a new rental property.
HR Documents
Sign employment contracts, offer letters, and HR forms with electronic signatures.
Example: Sign an employment offer letter PDF to accept a new job.
Pro Tips for Secure PDF Signing
Trusted by signing professionals globally
Use a Consistent Signature
Create a consistent electronic signature that you use across all documents for professional recognition.
Practice Your Signature
If drawing your signature, practice a few times to get it looking natural and consistent.
Choose a Professional Font
If typing your signature, choose a professional, cursive font that looks like a real signature.
Use High-Quality Scan
If uploading a signature image, use a high-quality scan for the best results.
Position Carefully
Place your signature in the appropriate location on the document (usually near signature lines).
Size Appropriately
Resize your signature to fit the available space without looking too large or too small.
Preview Before Saving
Always preview the signed document to ensure your signature is positioned correctly and looks professional.
Protect After Signing
After signing, use our Protect PDF tool to add password protection to prevent unauthorized changes. Protect PDF.
Save a Copy
Always save a copy of the signed PDF for your records before sending it to others.
Multiple Signatures
For documents requiring multiple signatures, use our Edit PDF tool to add all signatures in one place. Edit PDF.
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