Tools & Platforms
Battlemap Slicer
Battlemap Slicer is a web app by FutureHax that turns a digital battle map into print-ready US Letter room sheets, so a game master can reveal a dungeon at the table one room at a time. Users upload a PNG, JPG, or WebP map and calibrate the grid automatically or by marking a square, so each square prints at one inch. They then trace each room with vertex-to-vertex outlines that snap to the half-grid.
The app packs the rooms onto Letter pages with dashed cut guides and exports a PDF. The app is local-first: maps stay in the browser unless the user chooses to save to their account, and dungeons can be saved and resumed.
A demo is available, and full access is a one-time $14.99 purchase or comes with the FutureHax Patreon Captain tier.