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I need to take a sprite sheet and convert it into multiple images, one for each frame of the sprite sheet.

How should I go about this? I would prefer an offline method or a tool to do so -- I found Alferd SpriteSheet Unpacker, but it is really slow on Windows 7 and does not seem to respond well at all.

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I reworded your question so it is asking how to solve (what I presume to be) your specific problem rather than asking for a list of tools others are using, as the latter type of question is a poor fit for this site. – Josh Petrie Aug 11 '12 at 18:54
I'm the author of 'Alferd Spritesheet Unpacker' can you post a link to the spritesheet you're trying to unpack and I'll see why it's so slow. I developed and tested it on Windows 7 so that shouldn't be an issue. – ForkandBeard Aug 12 '12 at 8:29
@ForkandBeard Here is the spritesheet. i.imgur.com/R1MPY.png . When I click on Select All > Export Selected. Nothing seems to happen it just hangs, and I tried sleeping on it but no luck. – Aivan Monceller Aug 12 '12 at 9:01
@AivanMonceller thanks for posting the spritesheet. It's really small, I managed to unpack it in under a second running on Windows 7. I can't replicate the issue all I can suggest is make sure you're using ASU version 8 and you have permission to write to the folder you're trying to export to... – ForkandBeard Aug 12 '12 at 9:25
@ForkandBeard I know this is getting a bit off topic. But I tried to debug your work. (Just for the purpose of knowing the error). It stops when showing the folder browser dialog. I am not sure why. But I never see the folder browser dialog when clicking Export on cmdExport_Click – Aivan Monceller Aug 12 '12 at 12:06
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I just can't replicate the issue with FolderBrowserDialog.ShowDialog hanging, so I've created a new version of the app (version 9) which has a new 'Prompt for Export Folder' option. Unchecking this option removes the need for the dialog box.

You can download version 9 from my site Alferd Spritesheet Unpacker version 9.

On the 'Options' form untick the 'Prompt for Export Folder' check box and now ASU will just export the files to whatever directory path is in the long textbox at the bottom of the main form.

(If you don't want to change this option every-time you can set PromptForDestinationFolder to false in the .exe.config file)

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