JSON Array Adjacent Delta

Add a difference-from-previous property for numeric values in array order, using null for the first row.

About this tool

Add a difference-from-previous property for numeric values in array order, using null for the first row. Provide valid JSON in the input area and review the example to understand the transformation. The operation checks that selected records and properties have the expected shape and rejects invalid numeric values or malformed options rather than silently discarding them. Results are returned separately from your original input. Processing is local to this browser session, with no upload. Confirm the output structure and downstream schema before using the transformed data in an application or production workflow.

How to use this tool

  1. Paste valid JSON and any comparison input shown.
  2. Set the property names and numeric settings.
  3. Run the operation, inspect the result, and verify it matches your target data model.

How it works

JSON Array Adjacent Delta parses JSON, verifies the required operation inputs, and returns a separate result in readable JSON form.

When to use this tool

  • Preparing data fixtures and API records.
  • Analyzing or transforming JSON collections during development.

Limitations

JSON Array Adjacent Delta checks JSON syntax and documented operation constraints; external schema rules are not inferred.

Privacy

The input and output of JSON Array Adjacent Delta remain in browser memory and are not uploaded by the tool.