Sprite Sheet Layout Planner

Plan an animation atlas with exact frame rectangles and padding.

Try an example: Twelve sprites in four columns

How it works

Calculate a sprite sheet canvas and the pixel coordinates of every drawing. Use the JSON rectangles in a game or export the actual sheet from Flipline.

Frames are placed in row-major order with padding around the sheet and between cells.
Width = columns × frame width + (columns + 1) × padding. Height uses the ceiling of drawing count / columns.
Columns are capped at the drawing count. Canvas limit: 16 MP and 16000 px per side. This planner returns coordinates, not an image.

Sources

Pencil2D manual: timeline, drawings and onion skin workflow (Pencil2D)

For scripts and AI agents

JSON API: POST https://fliplinespritesheet.usefulweb.site/api/v1/calculate (same calculation as this page)
Interface description: OpenAPI 3.1 · AI guide: llms.txt
MCP server (Streamable HTTP): https://fliplinespritesheet.usefulweb.site/mcp · tool name flipline_sprite_sheet

Example request

curl -s -X POST https://fliplinespritesheet.usefulweb.site/api/v1/calculate \
  -H 'content-type: application/json' \
  -d '{"count":12,"width":256,"height":256,"columns":4,"padding":2}'