How to use it
- Choose the Ink and the Pen width. Draw your signature on the white pad with the mouse, a pen or a finger.
- Click Undo to remove the last stroke, or Clear to start again.
- Choose the Size: 2 × is sharp on most screens, 3 × for print. Click Download PNG.
What the PNG contains
The picture holds only your strokes. The area round the ink is cropped to the drawing with a small margin, and the background is transparent, so the signature can be placed on a white page, a photo or a coloured form without a white box. A PNG stores transparency in an alpha channel, which every common image editor and word processor reads.
The pad has 600 by 240 drawing units. The size you choose sets how many pixels each unit becomes, so the same signature is sharp at 2 × or 3 × on screens and in print.
What this picture is not
A drawn signature is an image. It shows what the signature looks like, but it does not prove who made it, and it is not a qualified or legally binding electronic signature. Check the rules of the document you sign: some need a signature from a certified provider, and a picture of a signature is not enough for them.
Example: a signature 128 units wide
A signature of 128 × 58 units, cropped with its margin, is saved at 2 × as a PNG of 256 × 116 pixels. At 3 × the same drawing is 384 × 174 pixels. Each stroke keeps its colour and width, and the margin round the ink is 12 units on every side.
Frequently asked questions
Is my signature uploaded when I download it?
No. The strokes are drawn in your browser, the PNG is made on your device and downloaded from there. You can check this by turning off your internet connection after the page has loaded and drawing a signature.
Is the signature picture legally binding?
No. A drawn signature is an image and does not prove who made it. It is not a qualified electronic signature. If a document requires a legal signature, follow the instructions of the person or the service that asked for it.
Why is the background transparent?
A PNG can store transparency. The signature has no white box, so it can be placed on any background. If you need a white background, add one in the program where you use the picture.
How do I get a signature onto a PDF?
Download the PNG, then place it on the page with an image or PDF tool. The PDF sign tool on this site adds a drawn or typed signature to a PDF page in your browser.
Can I draw with my finger on a phone?
Yes. The pad follows touch and pen input, and the page does not scroll while you draw on the pad. Use Undo to correct a stroke, or Clear to start again.
Sources
- W3C: Portable Network Graphics (PNG) Specification, Second Edition (alpha channel)
- WHATWG HTML: the canvas element, its 2-D context and toBlob
Figures and text last checked on Tuesday, November 10, 2026.