Method 1: Draw your signature
- Open your PDF in the free PDF editor.
- Select Draw / Sign.
- In the bar above the page, choose black or dark blue and set the thickness to 2–3 px.
- Zoom in with + for more room, then sign on the signature line with your finger or mouse.
- Made a mistake? Select Undo and try again. When it looks right, select Download PDF.
Method 2: Use a picture of your signature
- Sign on white paper and take a clear photo, or use a PNG signature image with a transparent background.
- In the editor, select Add image and choose the picture.
- Drag it onto the signature line and pull the corner handle to resize it.
A PNG with a transparent background looks the most natural, because there is no white box around the signature.
Good to know
A drawn or pasted signature is a simple electronic signature. It is accepted for many everyday documents, but it is not a certified digital signature. For legal or government documents, check what the receiving organisation accepts.
No sign-up, no watermark, and your file never leaves your device.
Frequently asked questions
How can I sign a PDF for free?
Open the PDF, choose Draw / Sign, pick a dark pen colour and sign with your finger or mouse, then download the PDF.
Can I add a picture of my signature to a PDF?
Yes. Choose Add image, select the signature picture, then drag and resize it on the page.
Is a drawn signature legally valid?
It is a simple electronic signature, accepted for many everyday documents. It is not a certified digital signature, so check the requirements for legal documents.