Small, sharp tools for pixel art.
Free things that run in your browser with no account and no upload, and a handful of paid Aseprite extensions for the jobs that belong inside the editor. Built by one person who got tired of doing these by hand.
Free browser tools
No sign-up, no upload, no limits. Your image is read and processed in the page itself.
Palette Extractor
Pull the exact palette out of a sprite, tileset or photo. Exports .gpl for
Aseprite and GIMP, Lospec .hex, CSS variables, JSON, or a PNG swatch strip.
More on the way
A blob-tileset previewer and a dither-ramp generator are the next two. They follow the same rule as everything here: useful on its own, free, and nothing leaves your machine.
Aseprite extensions
Installed from a .aseprite-extension file, they add a menu item and get out of the way.
Sold on itch.io.
PaletteOut
Export the current palette straight out of Aseprite to .gpl, Lospec .hex, CSS or JSON.
AutoBlob
Draw five base tiles; get the full 47-tile bitmask blob set, regenerating as you edit.
$5.99PaletteGuard
Audit a sprite against a palette and find every off-palette pixel before you ship.
$3.99EdgeForge
Outlines and drop shadows with proper corner handling, on their own layers.
$3.99CelTween
Tween a selection across frames with real easing curves instead of hand-nudging.
$3.49DitherForge
Ordered-dither gradients between two colours, in any direction, at any pattern size.
$2.99 Free · MITExtension starter kit
Want to build your own? A tested template — core/shell split, headless tests, and an end-to-end test that runs inside real Aseprite.
What this is
SpriteWright is a one-person project. The free tools exist because I needed them and a web page is the cheapest way to make something useful available to everyone; the paid extensions exist because doing the same job inside Aseprite — on the actual sprite, with undo, on a real layer — is a different and harder thing than doing it in a browser tab. If a free tool here does the job for you, that is a completely fine outcome.