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Sign PDF

Add electronic signatures to PDF documents on iPhone or Android. Draw or type your signature free.

📱 App Store — Free 🤖 Google Play — Free

How to Sign PDF on your phone

Download PDF Tools free from App Store or Google Play
Open the app and tap Sign PDF
Select your files and configure options
Tap the action button — done in seconds
Share, save or export your result

No account required. No watermarks. Works 100% offline.

Why PDF Tools for Sign PDF?

✅ 100% free — no subscription, no hidden fees
✅ No watermarks on your documents
✅ Works offline — files never leave your device
✅ Available on iPhone, iPad and Android
✅ Part of a 20+ tool PDF suite