CHAPTER 26. THE GIMP IMAGE EDITOR 247
Gimp Menu: Filters / Map / Small Tileshows what the current image
would look like if it were used to tile the background of a webpage.
Gimp Menu: Image / Canvas Sizechanges the size of the image.
Gimp Menu: Image / Crop to Selectiondeletes everything that is not
currently selected, and changes the size of the image.
Gimp Menu: Image / Scale Imagechanges the number of pixels in the
image but does not change the general appearance of the image. Mostly it is
used to shrink an image to a smaller size so it can be more quickly displayed
on a webpage.
Gimp Menu: Layer / Transform / Offsetshifts the image left or right,
and up or down, with wrap-around so the pixels shifted off on the left get
added back on the right, and so forth.
Gimp Menu: Layer / Transparency / Add Alpha Channeladds the
capability for transparency to the current layer of the image.