How to Sign a PDF for Free
Initialing a form, signing an acknowledgement, or adding your signature to an everyday document — here's how to do it in your browser in under a minute. Note upfront: this is a simple, drawn signature, useful for everyday paperwork, but it isn't a legally-binding qualified electronic signature (which Swiss and EU law both treat as a separate, more formal category).
Open the Sign PDF tool
Go to the Sign PDF page. No account, no software to install.
Add your PDF file
Drag and drop it onto the page, or click “Browse files”, then choose which page you want to sign from the thumbnails shown.
Draw your signature
Draw it with your mouse or, on a touchscreen, your finger or a stylus, directly on the signature pad. If you've signed here before, your last signature is already there — no need to redraw it (see the note below).
Place it on the page
Click on the page preview where you want the signature to appear, then use the slider to adjust its size if needed.
Download the signed PDF
Click “Download”. The signature is embedded directly into the page in your browser.
Frequently asked questions
- Is this a legally-binding electronic signature?
- No. This is a simple, drawn signature — useful for everyday documents, but not a legally-binding qualified electronic signature under Swiss law (ZertES) or EU law (eIDAS), both of which require a separate, certificate-based process.
- Can I sign more than one page?
- Each pass through the tool places one signature on one chosen page. To add it to another page too, drop the resulting downloaded PDF back into the tool and repeat the process.
- Where is my drawn signature stored?
- Only on your own device, so it can be reused on your next visit — it's never sent to a server or stored anywhere else. Clicking “Clear” removes it completely, including the saved copy.
- Is my file uploaded anywhere?
- No, never. The whole process — drawing, placing and embedding the signature — happens locally in your browser.