Open source · MIT

Data structures & algorithms,
brought to life.

Watch sorting run step by step, count the steps algorithms take, and turn grids into pictures. No setup, no sign-up.

Bubble sort, running live

Visualizers · a good order to explore them

Never heard of Big-O? Start here — a tiny story, count steps with the computer, then watch real growth curves.

Watch Bubble, Selection & Insertion sort run one step at a time — animated bars, synced pseudocode, and live comparison/swap counters.

Paste any JSON matrix, color cells by value, toggle indices, and see how grids map to rows and columns.

Play, pause, and scrub through every comparison and swap at your own pace.

Pseudocode, complexity, and C++/Python/JS/TS code sit right beside each visual.

No setup, no sign-up. MIT-licensed and runs entirely in your browser.