JSON Object Array Deduplicator

Keep the first record for each distinct value of a selected property in an array of JSON objects.

About this tool

Keep the first record for each distinct value of a selected property in an array of JSON objects. Paste valid JSON, JSON Lines, CSV, or query data according to the labeled input. The example shows the expected transformation and any additional options. Processing happens locally in the browser, and malformed input or incompatible data structures produce a clear error. Inspect the result and validate it against the destination schema before using it in a production system. These tools do not send source data to a server.

How to use this tool

  1. Paste data into the labeled input.
  2. Provide a property name, range, or filter when requested.
  3. Run the tool, inspect its result, and copy or download it.

How it works

JSON Object Array Deduplicator parses the supplied structured data, applies the documented transformation or report, and returns a result for review.

When to use this tool

  • Preparing structured data for development workflows
  • Inspecting and reshaping sample data locally before application testing

Limitations

JSON Object Array Deduplicator validates syntax and operation requirements but cannot infer every application-specific schema or business rule.

Privacy

The source data and results in JSON Object Array Deduplicator stay in browser memory and are not uploaded by this tool.