Sign a PDF document
Sign forms, agreements and letters without printing. Create your signature once, drop it anywhere on the page and resize it to fit.
Processed on your device · never uploadedDrop your file here
or
Choose PDF fileFiles stay on your device – nothing is uploaded
How to use Sign PDF with PDFroo
- Open the PDF you need to sign.
- Create a signature – draw, type or upload an image.
- Drag and resize it on the page, add more if needed, then press “Apply & download”.
Get a natural-looking signature
Drawing with a finger on a phone often looks more natural than a mouse. Use dark blue or black ink, and size the signature to roughly match the signature line.
Frequently asked questions
Are my files uploaded to a server?
No. PDFroo processes your files inside your own browser using JavaScript and WebAssembly. Nothing is uploaded, so your documents never leave your device and there is nothing for us to store or delete.
Is this a legally valid signature?
PDFroo adds a visual electronic signature, which is accepted for many everyday agreements. Some legal documents require certified digital signatures (with a certificate) – check the requirements for your document.
Can I remove the white background from a photo of my signature?
Yes. When uploading, keep “Remove background” on and PDFroo makes light pixels transparent.
Can I sign multiple pages?
Yes. Place the signature on as many pages as you like, or use “Place on all pages”.