Godot
Supported- Exports
- TileSet · Terrain
- Setup time
- ~5 min
- Difficulty
- Easy
Import PNG + Godot JSON mapping
Studio-Grade Developer Tool
Bitmask Autotile Generator for Godot & Unity
Turn a single tile into a seamless 47-tile Autotile bitmask set with a live testing canvas.
Live Testing Canvas
Left Click: Paint | Right Click: Erase
Upload to Test
Paint directly on this grid after uploading your tile.
Generated 47-Tile Sheet
256x192 px · click a tile to inspect
Waiting for source assets...
Tile inspector
Click a tile on the generated sheet
Generate a sheet to inspect tiles.
Generation statistics
Tile count
47
Tile size
32px
Template
47 Blob
Export format
PNG + JSON
Sheet
256×192
Validation
Pending
Validation
Incomplete — upload center tile
- Missing center tile — required for generation
- Missing edge tile — edges fall back to center
- Missing outer corner — corners fall back to center
- Missing inner corner — optional for some styles
Export center
Production-ready formats for your pipeline
Optimization panel
Ready for production · NOGenerated tiles
47
Unused area
2%
Padding
0 px (tight sheet)
Grid
8×6
Engine compatibility
Import with confidence
Unity
Supported- Exports
- RuleTile
- Setup time
- ~10 min
- Difficulty
- Medium
PNG + RuleTile mapping JSON
Tiled
Supported- Exports
- TSX tileset
- Setup time
- ~3 min
- Difficulty
- Easy
Load TSX next to PNG
LDtk
Supported- Exports
- Tileset JSON
- Setup time
- ~5 min
- Difficulty
- Easy
Point tileset path at PNG
Integration guide
- 1
Export PNG sheet + Godot metadata JSON
- 2
Import PNG as Texture2D (Nearest filter)
- 3
Create TileSet → add atlas with tile size
- 4
Apply bitmask mapping from JSON / paint terrains
Input vs output
Drag to compare source tile and generated atlas
Generate a sheet to compare
Upload center tile
Professional best practices
Tile Padding
Keep 0–1px between cells if your importer adds margins; avoid bleed into neighbours.
Bleeding
Match edge colours or extrude 1px when using bilinear filtering in-engine.
Pixel Perfect
Use Point / Nearest filtering and integer camera zoom for crisp autotiles.
Power of Two
Prefer 16/32/64 source tiles so the 8×6 sheet stays GPU-friendly.
Atlas Size
Sheet is tileSize×8 by tileSize×6 — keep under your engine max texture size.
Continue your game dev workflow
Idea → level → art → collision → audio → progression
GDD Generator
Earlier step
Level Generator
Earlier step
Sprite Sheet Packer
Earlier step
Autotile Generator
You are here
Auto Hitbox
Trace a sprite's alpha into a collision polygon automatically.
Collider Simplifier
Reduce collision vertex count without changing hit behaviour.
Retro SFX
Synthesize 8-bit jumps, coins and explosions in the browser.
XP Balancer
Model level curves, gold flow and stat progression.
Loot Simulator
Verify drop rates with Monte Carlo simulation before shipping.
Frequently asked questions
Related tools
More free browser-based game development tools
2D Procedural Level Generator
Terrain sets are consumed by the tilemap your level generator emits.
Game Design Doc Generator
Turn a game idea into a structured, scoped design document.
Sprite Sheet Generator
Pack animation frames into a padded atlas with a JSON data file.
Auto Hitbox Generator
Trace a sprite's alpha into a collision polygon automatically.