Sign a PDF with a Digital Signature
Add a signature to PDF documents quickly and securely.
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
Frequently asked questions
How do I sign a PDF online?⌄
Upload your document, draw or type your signature, place it where needed, and export the signed PDF.
Can I draw my signature with a mouse or finger?⌄
Yes. You can draw a signature with a mouse or touchscreen, type one, or upload an image of your handwritten signature.
Is an electronic signature legally valid?⌄
In many countries electronic signatures are legally recognized for most agreements. Check your local regulations for documents with special requirements.
Can I sign in multiple places?⌄
Yes. Place your signature, initials, or the date on as many pages as the document requires.
Is signing private?⌄
Yes. Your document and signature stay in your browser and are never uploaded.