PixBuilder Studio allows you to create and edit gradients.
Pressing the button for editing or for creating a gradient starts the dialog for editing a gradient.
A gradient consists of a set of key points, between which a color transition occurs. A color and a position on a gradient can be set for each point (varies from 0 to 100%). Left-click on the Key Points panel to create a key point. To delete a point, pull it out of the working area.
The points corresponding to the center of a color transition lie between two neighboring key points. They can be shifted either to the left or the right.