The Eraser is a tool that alters the transparency of an image (on the selected raster layer). Processed sections are shown as transparent areas, with a checkerboard background.

Attention! When saving a file into a format that does not support transparency (JPEG), the transparent areas will be replaced by white. To keep the transparency, use PNG format.


The basic tool settings are shown in the Tool Options panel above the Image Window. To display the full list of parameters, press the tool icon in the Tool Options panel, or right-click the image. To specify the parameter settings, enter a numerical value in the parameter’s field or use the slider.

Beside the above-listed settings, some additional parameters are available for this tool.


Press the Default button to set all settings to their default values.

In order to erase in a straight line, select the starting point of the line with the left mouse button, then, press and hold down Shift, move the cursor to the desired endpoint, and release Shift. If Shift is not released, then successive lines will be drawn to each point where the mouse is clicked.