Blitgrid — Pixel Art Level Editor

A fast pixel-art tilemap and level editor in your browser — auto-tiling terrains, collision, objects, procedural generation, and instant playtesting.

 **Paint** with a brush, eraser, bucket fill, rectangle, line and eyedropper. Drag any block of the

  tileset to make a multi-tile stamp, then flip it (**X** / **Y**) or rotate it (**Z**).

- **Auto-tiling terrains.** Select a 4×4 block of any tileset and it becomes a terrain whose edges

  resolve themselves as you paint. Grass, water and stone come ready to use.

- **Layers** with visibility, lock, opacity and reordering. Mark one **solid** and it becomes your

  collision layer — that is the whole setup.

- **Objects** — spawn, coins, enemies, doors, checkpoints, triggers — with sizes, names and custom

  properties your engine can read.

- **Procedural generation:** cellular-automata caves, fractal-noise islands, platformer hills,

  dungeon rooms and scatter. Seeded, so a good level can be reproduced, and one Ctrl+Z undoes it.

- **Playtest without leaving the editor.** Platformer or top-down, with real collision, coin pickups,

  respawns and a level-complete door. Tab switches mode, Esc returns to editing.

- **Import any PNG tileset** (margin and spacing supported) by drag-and-drop, file picker or paste,

  or use the built-in one — it is drawn in code, so there are no licensing strings on anything you

  make with it.

- **Edit the tiles themselves.** Double-click a tile and a pixel editor opens over the map: pencil,

  eraser, bucket, line, rectangle, colour picker, brush sizes, a palette pulled straight out of your

  tileset, flip / rotate / nudge / scale, and a 3x3 tiling preview so you catch seams while you draw.

  Every copy of that tile on the map redraws as you paint, and the whole session collapses into one

  undo step. Imported someone else's tileset and the grass is the wrong green? Fix it here.

- **Room to work:** Focus mode (Shift+F) hides the panels, the tileset panel zooms to 16x with the

  wheel, and **9** zooms the map straight into your current selection.

- Unlimited undo/redo, autosave, and a project file you can reopen anywhere.