Add signature or watermark — free online tool

What to know

This editor works with layers rather than a fixed stamp. You can add a text layer, an image layer such as a logo or a scanned signature, and a drawn signature layer, then mix them on one picture. Each new layer appears selected near the lower right corner, about 5 percent in from the edges, ready to drag.

Corner handles resize a layer and keep its proportions; holding Shift stretches it freely, and the arrow keys nudge the selected layer. Send backward and Bring forward change which layer sits on top, Remove selected layer deletes one, and an Opacity slider from 10 to 100 percent fades each layer separately. A text layer is white by default and has a color control, so dark text can be used on a bright photo.

Text is drawn with a heavy system font whose height follows the layer height and whose width is stretched to the layer width, so freely dragging a text box wider also makes the letters wider. The drawn signature has its own box: switch on Draw in box, sign with the pointer, then finish drawing. A minimum layer size of about 2.5 percent of the shorter image side stops marks from shrinking to nothing.

The export is flattened into the pixels of a copy in the source format at quality 0.92, with PNG as the fallback for AVIF or SVG input. Layers are not saved for later editing, so keep the original photo. An empty text layer blocks export until you type something or delete it.