Keyframe.itAnimate slot symbols in your browser — idle, win, drop, destroy
Slot games need every symbol animated the same way: a subtle idle loop, a big win celebration that returns to rest, and a destroy that clears the reel. Keyframe.it is a free, browser-based animation editor built around exactly that workflow — from raw art to a game-ready pixi-spine bundle, GIF, sprite sheet or video, with no install and no signup.
Built for symbol work
- One-click animation pack — generate idle, win, drop and destroy clips for a symbol at once, then tune them on the dope sheet.
- Win FX library — coin showers, shockwave rings, light rays, sparkle bursts, payline streaks, electric arcs, shine sweeps, hit flashes and anticipation shakes, keyed into your win clip with one click.
- Slot-symbol canvas guides — cell-size guides (256²–1024²) so art sits correctly in the reel cell with FX headroom.
- Spring physics — hair, cloth, chains and smoke sway automatically and bake to keyframes on export.
- Character symbols too — full bone rigs with weighted meshes and IK for premium character symbols, like the noir character demo.
- Every export a slot pipeline needs — Spine 3.8/4.2 bundles for engine integration, GIF/video for pitches, sprite sheets for lightweight reels.
Works with PixiJS-based slot engines
Modern slot front-ends — including stake-engine games — are built on PixiJS, where symbol animation is Spine-format skeletal animation. Keyframe.it exports load directly in spine-pixi-v8 / pixi-spine, and every export ships with a test.html preview so you can verify the clips before integration. See the pixi-spine loading guide for the exact code.
Fits how studios actually work
Artists can slice a symbol sheet, clean edges, and add text labels ("WILD", "BONUS") in the built-in image editor without round-tripping to Photoshop. Teams can package a whole project (art + rig + animations) into one file to share. And AI agents can drive the entire editor through its scripting API — useful for batch-animating symbol sets.