Slice + SliceX €9
Two cutters, one module. Slice rebuilds panels and frames at any size — corners stay pixel-fixed. SliceX cuts sheets along free grid lines into up to 25 cells, each its own PNG.
Details
Now on Gumroad + itch.io
Sprite-sheet toolbox · Windows
Green-screen sprite in.
Green-screen sprite in.
Clean PNG out.
Chroma-key, pixelize, slice and batch game sprites on your own machine — no upload, no cloud, no account. Full quality, hard pixel edges. Free forever, no watermark, no trial.
Runs local — no cloud, no telemetry
No watermark, no trial
Why it's different
Built for your machine — not someone's server.
100% offline
Every pixel is processed locally. Your unreleased characters, tilesets and key art never touch a server — nothing to leak, nothing to train on.
Deterministic, not generative
Same input, same output — byte for byte on the same version. A tool you control, not a slot machine.
Batch & CLI
Point it at a whole folder, or wire the headless CLI into your build or CI. Clean and convert sheets at scale.
Pixelize · the flagship module
Your art in. Real pixel art out.
Pixelize turns painterly, rendered or AI-generated images into intentional classic pixel art: a true low-res grid, a curated palette, clean flat areas. Offline, deterministic, no GPU.
- A real conversion, not a blur filter — area downscale to a target resolution, then every pixel snaps to a limited palette.
- Console-authentic palettes, by name: PICO-8 · Game Boy DMG · DawnBringer 16 — or Mega Drive (3-bit) · SNES (5-bit) color grids.
- Deterministic by design. Same input + same settings + same app version = byte-identical output. Every run.
Generated a concept you love? Painted something at the wrong resolution? Pixelize makes it shippable. It doesn't generate anything — it transforms your image, deterministically, on your machine.
See Pixelize in full
€12 once · also in the Studio-Kit €19
More palettes — same art, by name
For AI-first creators
Turn AI art into pixel art you can actually own.
Raw AI output reads as slop and sits in legal grey territory. Pixelize runs it through a deterministic, offline pipeline into real, low-res, real-palette pixel art — an intentional asset you made, on your machine, that ships in your game.
See Pixelize
The other modules
Sharp, one-time unlocks. No subscription.
Batch & Automation €9
Process a whole sprite folder in one run — or wire the headless CLI into your build or CI. Every operation you own (free ChromaKey included) batches, and it's deterministic: identical output every time.
DetailsUndetail €3
The €3 fixer. Too-fine art becomes a coarser, intentional pixel structure — block by block, with no gray fringes and no half-transparent mush.
Details
The whole flow
Drop in. Clean up. Ship.
01
Drop your sheet
A single PNG — or a whole folder with Batch & Automation.
02
Pick the profile
Auto-detect the key, or choose one of nine profiles. Preview updates live.
03
Export clean
Transparent PNGs, hard pixel edges, ready for your engine. That's the whole job.
Pricing
Everything. €19. Stop counting.
ChromaKey is free forever. Modules are one-time unlocks. The Studio-Kit is complete — every module, plus every future one.
Studio-Kit
Most popular
€33 €19 once
- Every module: Pixelize, Batch & Automation, Undetail, Slice + SliceX
- Every future module, included automatically
- Bought separately: €33
Pixelize + Batch alone: €21. The whole garage: €19.
Get the Studio-Kit
Free core
€0
- ChromaKey single-file — all nine profiles, full quality
- Free forever — no watermark, no trial
Pixelize €12
Slice + SliceX €9
Batch €9
Undetail €3
Compare all floors
Quickstart
The questions every builder asks first.
Yes — everything happens on your machine. No upload, no cloud round-trip, no GPU requirement, no account. Your sprites never leave your disk.
No catch. ChromaKey is free forever — all nine profiles, full quality, no watermark, no trial. Paid modules (Pixelize €12, Slice + SliceX €9, Batch & Automation €9, Undetail €3) are one-time unlocks, no subscription.
No — it's a deterministic converter, not a generator. Bring your AI art; Pixelize turns it into an authored, ownable pixel-art asset. Downscale, palette, map, done — no prompts, no credits. Same input, same output, byte for byte (on the same app version).
You get a license key by email. Paste it into the Controlcenter — no login — and your modules unlock instantly. You can move it between machines from the same page.
What is MutaSprite?
MutaSprite is a free, 100%-local Windows toolbox that turns green-screen sprites into clean transparent PNGs with pixel-perfect chroma keying (free forever, no account, no cloud). Optional one-time modules add AI-art-to-pixel-art conversion (Pixelize), 9-slice + SliceX cutting, folder Batch automation and Undetail — €3–€12 each, or the Studio-Kit for €19. Sold via Gumroad and itch.io.
Go on, feed it a green-screen sprite.
Free forever, no account, runs locally. The worst case is you keep a clean PNG.
v0.15.3 · 31 MB · Windows 10 / 11