Sign a PDF Online — Free
Add your signature to any PDF in seconds. Free, no signup to start, and your files never leave your device.
Click or drag a PDF here
.pdf files only
Ink colour
Sign here
Upload a PDF to get started
How to sign a PDF
Select or drag in the PDF you want to sign.
Draw, type, or upload your signature and place it on the page.
Click Download and your signed PDF saves automatically.
Private by design
Your files are signed right in your browser. Nothing uploads to a server, so nobody — including us — ever sees them.
Fast and free
No account needed to start, no watermarks, no waiting in a queue. Done in seconds.
Works everywhere
Runs on any modern browser — Windows, Mac, phone, or tablet. Nothing to install.
Frequently asked questions
Is it safe to sign PDFs online?
With StylusPDF, yes — because nothing goes online. Signing happens entirely inside your browser on your own device, so your documents and signature are never uploaded, stored, or seen by anyone else. That makes it safe even for contracts and legal forms.
How do I create my signature?
You can draw it with your mouse or finger, type it in a signature font, or upload an image of your handwritten signature.
Is signing PDFs free?
Yes. You can sign PDFs for free without creating an account. A free account gives you more daily downloads, and StylusPDF Pro removes all limits.
Can I place my signature anywhere on the page?
Yes. You can drag your signature to any position and resize it to fit before downloading.
Do I need to install anything?
No. StylusPDF runs in your web browser. There’s nothing to download or install, and it works on any device.