JSON Array to Object
Index an array of JSON records by a string or safe integer field, with explicit duplicate-key handling.
Start with your input
Edit the example or replace it with your own text.
Choose your options
These settings are optional. Keep the defaults to get started.
How to use JSON Array to Object
- Load the example or enter your own values.
- Choose the relevant options and run the tool.
- Review the result, then copy it or download a local file.
When this tool is useful
Change a list response into a lookup object when a UI or fixture needs direct access by identifier. Select the key field with a JSON Pointer such as /id or /user/code. Each resulting object property contains the complete source record. This is useful when testing normalized application state or preparing an input expected by another library.
Reading the result and limitations
JSON property names are strings, so the number 1 and the string 1 map to the same destination key. Duplicate behavior is an explicit choice, with rejection as the default to avoid silent data loss. Keys must be strings or safe integers; missing paths, null, booleans and complex keys are rejected. The output safely preserves property names such as __proto__ as ordinary data. Object enumeration can reorder integer-looking keys, so retain an array when ordering matters.
Example input
[{"id":"u1","name":"Ada"},{"id":"u2","name":"Grace"}]What are the main limits of JSON Array to Object?
JSON property names are strings, so the number 1 and the string 1 map to the same destination key. Duplicate behavior is an explicit choice, with rejection as the default to avoid silent data loss. Keys must be strings or safe integers; missing paths, null, booleans and complex keys are rejected. The output safely preserves property names such as __proto__ as ordinary data. Object enumeration can reorder integer-looking keys, so retain an array when ordering matters.
Is input uploaded?
Processing takes place in your browser. This tool does not send your input or selected files to a conversion API.