Sign PDF
Sign PDF lets you draw or upload your signature and stamp it securely onto any page of a PDF document. It runs 100% on-device: nothing you add is uploaded, stored or logged.
At a glance
- Tool: Sign PDF
- Category: PDF utility
- Price: Free forever — no premium tier, no watermark
- Account: Not required
- Processing: On-device (WebAssembly / HTML5), zero uploads
- Privacy: Files never leave your device
How to Use Sign PDF:
Upload your document and draw or import your signature. The tool securely embeds your digital signature onto the PDF page.
Key Features & Advantages:
- 100% Free with absolutely no credit card requirements
- No signup, registration, or email authentication ever needed
- Infinite conversions/calculations with no daily caps or throttling
- Blazing-fast client processing with high-performance algorithms
- Clean, eye-safe theme with full responsive layout controls
Frequently Asked Questions (FAQs):
Is the Sign PDF tool free to use?
Yes. Sign PDF on FreeConvertio is completely free, with no sign-up, watermark, or hidden fees.
Does Sign PDF upload my file to a server?
No. Sign PDF runs 100% inside your browser. Your file is processed locally on your device and is never uploaded anywhere, which keeps it private and secure.
Is there a file size limit for Sign PDF?
Since Sign PDF processes files entirely in your browser, the practical limit depends on your device's memory rather than a server-side cap. Most everyday files convert instantly.