Skip to main content
Tool Factory

Structured Data

JSON Sorter

Sort JSON object keys, or order an array of objects by one property, in your browser. Rejects duplicate keys and numbers that would lose precision.

Tool workspace

Your input stays in this browser.

Add the required input to continue.

Needs input

You can run the tool again after any change.

Sorting

Sort mode
Order

Your result appears here

Sort JSON object keys, or order an array of objects by one property, in your browser. Rejects duplicate keys and numbers that would lose precision.

This tool runs open-source code from OmniTools (MIT License). See open-source credits.

Object keys sorts direct keys using browser locale order. Array values compares one direct property with JavaScript comparison operators.

The result uses two-space indentation. JSON Lines input keeps one compact record per line.

  • Put configuration keys in a predictable order before reviewing a diff.

Sources: RFC 8259: JSON objects, arrays, and numbers

Choose object keys or array values

  1. Choose Object keys for an object, or Array values for records.
  2. For records, enter the direct property name in Array object key.
  3. Choose Ascending or Descending. Missing and null properties go last in either order.

Sort the top-level keys

Input: {"version":2,"app":"demo","build":{"target":"web","mode":"prod"}}

Settings: Sort mode: Object keys, Order: Ascending

Result: { "app": "demo", "build": { "target": "web", "mode": "prod" }, "version": 2 }

The outer keys move. The inner build object retains its original order.

Nested objects and numeric precision

  • Nested objects keep their original key order.
  • The sorter rejects duplicate keys and numbers that would change value during serialization.
  • Array object key does not resolve nested paths.

Questions

Does sorting preserve number notation?

No. The sorter serializes parsed numbers, so decimal zeros and exponent notation can change without changing the value.