Sign PDF with Digital Signature
Add legally binding digital signature to PDF documents.
How it works (3 quick steps)
- 1
Upload
Select your contract or agreement.
- 2
Sign
Draw, type, or upload your signature and place it on the page.
- 3
Secure
Click finish to flatten the file and download your signed copy.
Why pick Convertify for this?
Files stay on device
Convertify processes everything in your browser using JavaScript. Your file is never uploaded — confirm with DevTools → Network. That makes this safe for sensitive material like contracts, IDs, and financial documents.
No upload wait
Because nothing uploads, processing starts the instant you click. For typical files (under 50 MB) the whole job finishes in seconds — no progress bar, no queueing behind other users.
No daily quota
Free without limits, including no "3 conversions per day" cap that competing services impose. Run as many sign pdf jobs as you need.
No watermark
Your output is clean — no Convertify branding, no metadata stamp. Same as if you'd run a paid desktop app.
Other ways people use Sign PDF
- •Signing employment contracts and NDAs securely
- •Executing real estate and rental agreements on mobile
- •Signing child permission slips and waivers
- •Approving professional invoices and work orders
- •Completing bank forms and insurance documents