Drop a file here or click to choose
Your file stays on your device. Processing happens locally in your browser.
What is Sign PDF?
Sign PDF adds an electronic signature to your PDF in the browser. Draw it with a mouse, finger or pen, type your name in a handwriting font, or upload a photo of your signature with the white background removed. Place it anywhere, add initials (on every page if you like), a date or text, and save. This is an electronic signature — a picture placed on the page — not a certified digital signature with a cryptographic certificate.
Sign PDF documents in your browser. Draw your signature, type your name in a handwriting font or upload a picture of it, place it on the page and add initials or a date. This is an electronic signature — an image on the page — not a certificate-based digital signature.
Key features
- Draw, type or upload your signature
- Blue, black or green ink
- Initials on one page or every page
- Date in DD/MM/YYYY, MM/DD/YYYY, ISO or long format
- Signature never stored or uploaded
- Runs in your browser — the PDF is never uploaded
Popular uses
- Sign an offer letter, rental agreement or school form
- Initial every page of a contract
- Add your signature to an invoice or quotation
Supported formats
Input: PDF, plus an optional PNG, JPG or WebP picture of your signature. Output: PDF.
Troubleshooting
- My uploaded signature has a grey box around it Keep "Remove white background" ticked and photograph the signature on plain white paper in good light.
- It asks for a password The PDF is encrypted. Type its password — it stays in this browser tab for this file only and is never sent. Without the password the file can't be opened.
- The page says the PDF is too large for this device Large PDFs have to fit in your browser's memory. Close other tabs, use a computer instead of a phone, or split the PDF into smaller parts first.
Also known as: E-sign PDF, Electronic signature, Add signature to PDF, Signature maker.
How it works
- Choose a PDF; the pages open on your device.
- Draw your signature, type your name in a handwriting font or upload a picture of it, then place it on the page. Add initials, a date or text if needed.
- Save and download the signed PDF.
FAQ
Is this a digital signature?
It is an electronic signature — a picture of your signature placed on the page. It is not a certified digital signature: there is no cryptographic certificate and it does not prove who signed.
Can I put initials on every page?
Yes. Tick "every page" and the initials are added to each page.
Is my signature saved anywhere?
No. It exists only in this page while you work and is never uploaded or stored.
Is my PDF uploaded?
No. The PDF is opened and processed in your browser; it never leaves your device.
Is an electronic signature legally valid?
Many countries accept simple electronic signatures for everyday agreements, but some documents require a certified digital signature or wet ink. Check what the recipient or the law requires.