Dungeon Map Builder

Dungeon Map Builder is a free dungeon map maker that runs in your browser. No download, no account, no credit card.

Drag rooms onto the grid, or hit Generate for an instant procedural layout you can refine by hand. Add water, pits, stairs, secret passages, doors, torches, traps and chests. Paint terrain with the brush tool. Upload your own PNG or animated GIF assets and place them anywhere. Keep rooms, props and GM notes on separate layers.

Export, no account needed:

• PNG / JPG for print or any VTT
• .dd2vtt (Universal VTT 0.3) — imported by Foundry VTT via the Universal Battlemap Importer, with wall segments, door portals and light sources already configured, plus GM notes as hidden Scene Notes
• Animated WebM (VP9, 30 fps) 

Play it online. With a free account, turn any map into a shareable link that opens as an interactive play surface: bring your own tokens, measure movement in feet, roll d4 to d100. Fullscreen for a TV or a tablet at the table. The people you share it with need no account.

Works on desktop and mobile with full touch support.

This download contains an editable .dungeon project file. Open the tool, click Load, and the map is yours to change.

👉 dungeonmapbuilder.com