Open source · MIT

See your data structures.
Color by color.

A clean, interactive playground for visualizing 2D arrays. More data structures and algorithms coming soon.

Open 2D Array VisualizerSee roadmap

JSON in, grid out

Paste any 2D array. Numbers, strings, booleans, even ragged rows.

Color every value

Pick a color per unique cell value to map data to meaning.

Learn as you build

Concise notes on complexity, traversal, and common pitfalls. Built in.

Try it now

Identity matrix preset

One click. Paste any JSON of your own to see it as a grid.

Launch →
[
  [1, 0, 0],
  [0, 1, 0],
  [0, 0, 1]
]