How to Sign a PDF
Add a legally valid electronic signature to any PDF for free. No account required.
Key Features
- Three signature methods: draw, type, or upload image
- Realistic handwriting fonts for typed signatures
- Transparent background — looks natural on any page color
- Place multiple signatures on multiple pages
- Resize and reposition before saving
- Add date stamp alongside signature
- In-browser processing — signature data never leaves your device
- Download as standard PDF
About How To Sign A PDF
Signing a PDF electronically creates a legally binding signature directly in the document without printing, physically signing, and scanning. PDF AI Tools lets you draw, type, or upload an image of your signature and place it anywhere on any PDF page.
Place a signature in seconds with three methods: draw with your mouse or touchscreen, type your name in a realistic handwriting font, or upload a photo of your handwritten signature. All methods produce a transparent-background PNG embedded in the PDF.
Who Uses This Tool
- Sign a lease or rental agreement electronically
- Return a signed NDA to a client
- Countersign a contractor invoice
- Sign permission slips or school forms
How to Use How to Sign a PDF
- Step 1: Upload your PDF to the Sign PDF tool
- Step 2: Click the Signature button and choose draw, type, or upload
- Step 3: Create your signature and click Apply
- Step 4: Drag the signature to the correct location and download the signed PDF
Frequently Asked Questions
Is an e-signature legally valid?
In most jurisdictions (US, EU, UK, Australia) e-signatures on standard documents are legally binding. Notarized documents may still require wet ink.
Can I add my initials as well?
Yes — create separate signature elements for full signature and initials.
Does the signature expire?
No — the embedded signature image has no expiration.
Can I re-use my signature across documents?
Save your signature locally as a PNG and upload it each time using the upload method.