March 22, 20262 min read
Sign PDF — Add Signature to PDF Online Free
Add your signature to PDF documents online. Draw, type, or upload your signature. Free electronic signature tool — no sign-up needed.
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Sign PDF Documents Electronically
Need to sign a contract, agreement, or form? MyPDF's Sign PDF tool lets you add your signature to any PDF document — draw it, type it, or upload an image of your signature.
How to Sign a PDF
Step 1: Upload Your PDF
Open the Sign PDF tool and upload the document you need to sign.
Step 2: Create Your Signature
Choose how to add your signature:
- Draw — Use your mouse or finger (on touch screens) to draw your signature
- Type — Type your name and choose a signature font style
- Upload — Upload a photo or image of your handwritten signature
Step 3: Place and Download
Position your signature on the document, adjust size if needed, and download the signed PDF.
Common Documents to Sign
- Contracts and agreements
- Lease agreements and rental forms
- Tax forms and declarations
- Employment offers and NDAs
- Medical consent forms
- School permission slips
- Insurance documents
- Purchase orders
Tips
- Position precisely — Zoom in to place your signature exactly on the signature line
- Use transparent background — When uploading a signature image, use PNG with transparent background
- Flatten after signing — Use Flatten PDF to make the signature permanent
- Protect after signing — Password-protect the signed document to prevent tampering
Frequently Asked Questions
Are electronic signatures legally valid?
In many jurisdictions, electronic signatures are legally binding under laws like ESIGN (US), eIDAS (EU), and similar regulations. For high-value legal documents, consult your legal advisor.Can I sign multiple pages?
Yes. Place signatures on any or all pages of your document.Is my signature stored?
No. Your signature is applied to the PDF and then all data is deleted from our servers after 15 minutes. We never store your signature.Is it free?
100% free — no account, no watermarks, no limits.Related Tools
- Protect PDF — Secure signed documents with password
- Flatten PDF — Make signatures permanent
- Add Watermark — Add stamps alongside signatures
- Merge PDF — Combine signed documents
- Compress PDF — Reduce file size for emailing
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