How to use Sign PDF
- Choose your files, or drag & drop them anywhere on the page.
- Reorder or adjust the settings, then hit the big button.
- When it's ready, click "Save." Your files never leave your device.
FAQ
Is this a legally valid electronic signature?
This adds a picture of your handwritten signature. It is not a certificate-based digital signature. Check what the recipient requires.
Is my signature saved anywhere?
No. It exists only on this page until you close it.
Is it safe to use Sign PDF with my files?
Yes. Your files are never uploaded — they're processed only inside your browser. Every page is served with a policy that blocks outgoing connections (Content-Security-Policy connect-src 'none'), and the counter in the bottom-left shows the data sent: 0 bytes.
Is it free? Do I need an account?
It's completely free, no account needed, and there are no usage limits.
Does it work on my phone?
Yes. It works in mobile browsers on iPhone and Android. For very large files, a computer will be faster.