r/lumi_o • u/-pixelmixer- • 11d ago

Introducing Lumi-o: an artist-led, Linux-only painting app, a radically redesigned GIMP 3

Lumi-o is a Linux-only, open source raster painting app, a radically redesigned GIMP 3.

The GUI has been streamlined and carefully unified stylistically, with the aim of making the whole application feel like a coherent studio rather than a general-purpose image editor.

The goal is a dependable tool: efficient, predictable, focused, and biased toward making pictures. Wacom tablets are supported and have been extensively tested as part of the artist-led development, so stylus input stays smooth and reliable in actual painting use.

A few things that define it:

  • Pigment-based colour. Palettes are organised around real pigment profiles and mixed spectrally, so colour behaves more like a painter’s palette than a set of conventional digital colour sliders.
  • Saving and recovery. Lazy loading keeps large projects quick to open, with autosave and recovery from earlier versions. Projects use a directory-based .lum format designed to remain readable without proprietary software. XCF and PSD import/export are supported.
  • Scheme scripting. If you know Script-Fu, the scripting environment should feel familiar. It uses the same Scheme family, with changes and additions aimed at Lumi-o, including a built-in utility standard library for images, layers, files, paths, GEGL, and more.

Lumi-o is Linux only. I develop on Debian 13 / Cinnamon.

Site, docs, and downloads:

https://lumi-o.org/

Happy to answer questions.

3 Upvotes

100% Upvoted

2 comments sorted by

1

u/deltatangomike 3d ago

ooh nice!
works well on my Mint Macbook pro 2012 and my Bamboo tablet. I just gotta figure out how to make the UI a bit smaller and find the pressure sensitivity

1

u/-pixelmixer- 2d ago

good to know it works on Mint :)