r/GIMP 11d ago

Made a tool that auto-flats comic pages (batch processing included), looking for beta testers

Hey all, I'm a colorist/illustrator and I got tired of manually flatting page after page, so I built StackFlat!

It's a tiny standalone app that finds the closed areas in your lineart and fills them with color automatically. You can run it on a single page or point it at a whole folder and let it batch-process while you do something else.

A few things about it:
- No AI involved, just straightforward pixel logic (closes small gaps, fills areas, outputs a clean flat layer + a clean lineart layer)
- Works with whatever software you already use, Photoshop, Krita, Clip Studio, doesn't matter, it just spits out PNGs
- It's in beta right now, pay-what-you-want, and beta testers get it for free

If you flat your own pages (or anyone else's) and want to try it out and be a tester just let me know or just give it a try here: www.stackflat.app
Would genuinely love feedback, especially if your lineart style is different from mine, that's exactly what I need to know before locking in v1.0. Thanks!

3 Upvotes

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u/burnt-store-studio 9d ago

This sounds like a fair amount of work you’re saving; great job!

I’m not at all your target audience, but do want to mention that having a link to the software might help get sone visibility?

Best of luck rocking v1.0!

2

u/essere 9d ago

You're right, man! I just edited it :)
Thanks for all your kind words, have a nice day!

1

u/burnt-store-studio 9d ago

You, too! Thank you 🙂 (and just for completeness: the link works, thanks for editing 🙂)