Sign PDF Online
Easily draw, type, or upload your signature to sign contracts, agreements, and forms — completely free and 100% private.
Select or Drop PDF to Sign
Add your signature or date stamp to any contract, NDA, form, or document. 100% on-device processing — your document and signature never leave your device.
How to Sign a PDF in 3 Easy Steps
Upload Document
Select or drag your PDF contract or form into the workspace.
Create Signature
Draw by hand, type in elegant cursive, or upload your signature image.
Place & Download
Drag the signature onto the signature line and download your signed file.
Draw, Type or Stamp
Support for smooth mouse/touch drawing, calligraphic cursive styles, and transparent image stamps.
Multi-Page & Dates
Easily switch between pages, place multiple signatures, and add formatted date stamps with one click.
Zero File Uploads
Signatures are embedded directly in your browser. Sensitive financial and legal files never leave your device.
Need to scan and sign physical documents offline?
Download PDFCraft on Android to scan documents with your camera and add signatures on your phone with zero internet.
Frequently Asked Questions
Are my signatures and documents uploaded to any server?+
No. PDFCraft operates 100% client-side inside your browser tab using WebAssembly and local JavaScript. Your document and your signature never leave your device. We never store, transmit, or have access to your personal files.
What types of signatures can I add to my PDF?+
You can create signatures in 3 different ways: (1) Draw your signature directly with your mouse, finger, or stylus; (2) Type your name and choose from elegant cursive styles; or (3) Upload a photo/scan of your signature where white paper backgrounds are automatically removed.
Can I sign multiple pages or add dates to the document?+
Yes! You can navigate between pages, place signatures on any page, adjust position and size, and add automatic date stamps before downloading the completed document.
Is this electronic signature legally binding?+
Yes, electronic signatures placed on documents are widely accepted for most agreements, non-disclosure agreements (NDAs), invoices, and standard contracts under international e-signature frameworks such as the US ESIGN Act and EU eIDAS regulations for standard electronic signatures.
Can I sign documents offline without an active internet connection?+
Yes! Once you open the PDFCraft signing tool in your browser tab, all rendering, drawing, and vector embedding execute completely offline on your device without requiring an active internet connection.