Transparency

Type: By default Gimp has a checker bord pattern built up of mid tone gray checks. You can however change that in the drop down menu. NOTE: That white, black and gray only checks disables checks and the transparency will be shown as a solid black, white or gray color.

Check Size: The size of the checkers in the pattern that indicates transparency. NOTE: If you have set the checker type to white, gray or black only then then the size will have no effect what so ever.

Scaling

When you scale a image (make it bigger) you have to fill in missing pixels what color and value that those pixels should have is calculated in a interpolation algorithm . Gimp uses a Linear interpolation algorithm by default. Linear is a gives you a mid quality interpolation. Linear interpolation has less quality trade off for speed that Nearest Neighbour interpolation algorithm does. Nearest Neighbour is the fastest way to interpolate but it has the lowest quality of the interpolation algorithms. The Cubic interpolation algorithm produces the highest quality of the three interpolation types supported by Gimp. However it is considerably slower that the linear interpolation algorithm.

Index