IMPORTANT: As of version 1.2.17 of Aseprite (March 11, 2020, about three months after I released this script) this Lua script has been rendered obsolete by the addition of tile selecting, which can be done by double-clicking and then dragging the mouse. This script might be useful for other purposes, and so it will remain here, but otherwise, this script might not be useful to you anymore.

SnapSelection.lua is a Lua script for Aseprite that snaps your current selection to the the sprite grid.

What it Does:

• SnapSelection.lua will snap the selection to the grid configured in View > Grid > Grid Settings.
• SnapSelection.lua only works correctly on a rectangular selection. A selections created with the lasso or other non-rectangular selection will be converted to a rectangle by the script.
• The script snaps the top left corner of the selection left and up, and the bottom right corner down and to the right, therefore the selection must fit inside the cells you're trying to select.
• You must have a sprite selected, and a selection must have been made, for the script to work.