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About the developer

221 Stars 42 Forks MIT License 37 Commits 26 Opened issues


A spritesheet unpacker/ ripper for Windows

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What is this?

ASU is a simple spriting tool which takes an animation spritesheet image, with irregular sized and positioned sprites, and automatically finds the boundaries of each sprite so they can be exported as individual images.

The interesting bit

So the actual logic to find the individual sprites can be found in


To use

Just double click the .sln file.



This is the main Windows app and contains all the forms.


Contains some misc classes I've used in other projects. ASU uses to find rectangle bounds and distances.


Again contains some misc classes I've used in other projects. ASU uses it for Exception handling and getting version numbers.


ASU uses this one to preserve a bitmap's palette index - which the Mugen community go crazy over if you destroy a bitmap's indexed palette. I didn't wrote this project (forget where I found it).

Code quality

When I wrote this app I was working for a company which worked in VB and one of their dev standards was Hungarian notation, so it was just easiest for me, at that time, to write to that standard for ASU. I also, originally, never planned on releasing it, so it was only ever going to be a tool for me, which will hopefully explain some of its shoddyness. Ideally I'd like to move all the code over to C# and remove all the Hungarian notation and other kak.


06/11/2014 - All VB code has now been replaced with C#

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