JSON dedupe array
ClientDeduplicate primitive or object arrays using JSON equality—handy after concatenating lists.
Learn more: deduplicating arrays
Uses JSON.stringify for equality—objects with different key order compare as different values.
Local processing
Parsing and output formatting run entirely in your browser—nothing is uploaded for this transform.
Nearby workflows on Toolcore
- JSON unique by field — Deduplicate JSON array rows by one field—keep first or last; local only. once JSON text parses on this page.
- JSON reverse array — Reverse the order of elements in a JSON array—non-destructive copy, local only. once JSON text parses on this page.
- JSON shuffle array — Randomly shuffle a JSON array in the browser—Fisher–Yates, new order each click. once JSON text parses on this page.
- JSON array chunks — Split a JSON array into fixed-size batches or merge nested arrays into one list—pagination and bulk helpers, client-side. once JSON text parses on this page.
Common use cases
- Deduplicate primitive or object arrays using JSON equality—handy after concatenating lists.
- Paste valid JSON, then read the transformed output below.
Common mistakes to avoid
Invalid JSON
Fix parse errors before expecting output.
FAQ
Is data uploaded?
No—all parsing and transforms run locally.
How is this different from jq?
This page focuses on one deterministic task without a filter language.
More tools
Related utilities you can open in another tab—mostly client-side.
JSON unique by field
ClientDeduplicate JSON array rows by one field—keep first or last; local only.
JSON reverse array
ClientReverse the order of elements in a JSON array—non-destructive copy, local only.
JSON shuffle array
ClientRandomly shuffle a JSON array in the browser—Fisher–Yates, new order each click.
JSON array chunks
ClientSplit a JSON array into fixed-size batches or merge nested arrays into one list—pagination and bulk helpers, client-side.