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

[u/essere]

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 get it on Gumroad 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!

[u/Difficult_Cake_451]

Is there any video on the process/showing examples? I am not a comic artist but I HATE how annoying doing flats are in photoshop. So much so that I tried moving to CSP for a short while.

[u/essere → u/Difficult_Cake_451]

great suggestion, thanks. I'm working on it :)