Sign PDF
Add your signature to a PDF, or place initials, dates and text fields.
Runs in your browserUpdated
Don't take our word for it
Open your browser's Network tab and watch: your file never leaves this page. Or load this tool, turn off your internet, and it still works.
Drop a PDF here or click to browse
Runs in your browser — your file is never uploaded.
How to sign pdf
Add your signature to a PDF, or place initials, dates and text fields. To use Sign PDF: 1) add your file by dragging them in or clicking to browse, 2) set your security options, 3) download your result — done in seconds. It's free, needs no signup, and most tools run right in your browser so your files never leave your device.
Prepare signatures before placing them
Write or draw the signature clearly before placing it. Keep it inside the intended line and away from nearby terms or checkboxes. Review every date, initial, and text field. Save a final copy that cannot be confused with the unsigned file.
Popular ways to use sign pdf
Frequently asked questions
- Is Sign PDF free to use?
- Yes. Sign PDF is free to use. It's free, needs no signup, and most tools run right in your browser so your files never leave your device.
- Are my files safe and private?
- Completely. Sign PDF processes your file directly in your browser, so it is never uploaded to any server.
- Do I need to install anything?
- No. Sign PDF works in any modern web browser on Windows, Mac, Linux, iPhone and Android — nothing to install.