Free JS Array Flattening Utility

ByKandZ

Flattening nested arrays in JavaScript is annoying.

flat() only goes one level by default. Deep nesting needs custom recursion. And you always forget about deduplication.

I built a free tool that solves this.

What it does:

  • Flattens arrays to any specified depth
  • Handles fully recursive flattening
  • Supports custom deduplication

Use cases:

  • Processing API responses with nested arrays
  • Cleaning up data structures
  • Preparing arrays for CSV export
  • Removing duplicates after flattening

Privacy:
100% client-side. Nothing uploaded.

Try it: tools.kandz.me/array-flattening

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