JSON merge unique arrays

Client

Combine left and right arrays like a SQL union distinct for quick fixture merges.

Learn more: json merge unique arrays

Runs locally in your browser on the JSON you paste.

Local processing

Parsing and output formatting run entirely in your browser—nothing is uploaded for this transform.

Input

?
Paste JSON, then read transformed output below.

Nearby workflows on Toolcore

  • JSON formatter — JSON format online: pretty-print, minify, validate, escape, download . once JSON text parses on this page.
  • JSON cleaner — Remove null and optional empty values recursively—pretty-printed output; local only. once JSON text parses on this page.
  • JSON compare — Side-by-side diff paths; sample pre-filled. once JSON text parses on this page.
  • JSON tree viewer — Explore nested JSON as a collapsible tree—filter, copy JSONPath or Pointer paths; local only. once JSON text parses on this page.

Common use cases

  • Combine left and right arrays like a SQL union distinct for quick fixture merges.

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.