Raven’s Sprite Lasso Studio
Upload a sprite sheet, isolate a pose with an editable lasso, then arrange, scale, rotate, and flip frames on a transparent output sheet. Everything runs locally in your browser.
1. Source image — lasso a pose
Draw lasso creates an editable polygon from a freehand stroke. Move lasso lets you grab anywhere inside an existing selection and move all of its nodes together. Use Add node or drag individual nodes for detailed cleanup.
2. New sprite sheet — arrange poses
Drag a frame to reposition it. Rotation and flips pivot around the selected frame’s center.
Upload a sprite sheet to begin.
Move-lasso behavior: Select Move lasso, then drag from
inside the blue selection. The entire polygon moves together without
changing its shape. It cannot be moved beyond the edges of the source image.
Keyboard: Delete removes the selected output frame; Ctrl/Cmd + Z undoes; arrow keys move the selected frame by 1 pixel; Shift + arrows moves it by 10 pixels.
Keyboard: Delete removes the selected output frame; Ctrl/Cmd + Z undoes; arrow keys move the selected frame by 1 pixel; Shift + arrows moves it by 10 pixels.