JSON Flatten Online

Flatten nested values into JSON Pointer paths. Free json flatten online, with no installation or account.

Tool capabilities

Input: JSON
Output: JSON

How to use JSON Flatten

Flatten nested values into JSON Pointer paths. This json flatten works directly in your browser and is free to use without an account.

Paste or open your input in the editor.
Run the tool and inspect the output. If the input is invalid, correct the reported error and run it again.
Copy the result or download it to your device.

JSON Flatten · Example

Input

{
  "project": "A little more possibility",
  "local": true,
  "tools": ["JSON", "Markdown", "CSV"],
  "settings": { "theme": "light", "language": "en" }
}

Output

{
  "/project": "A little more possibility",
  "/local": true,
  "/tools/0": "JSON",
  "/tools/1": "Markdown",
  "/tools/2": "CSV",
  "/settings/theme": "light",
  "/settings/language": "en"
}

Usage notes

Inputs and results are processed on this device. Tool content is not sent to a processing server.

JSON requires double-quoted keys and valid values. Unsafe large integers are rejected; use strings when precision must be preserved.

Text input is limited to 5 MiB and processing runs in a cancellable worker.

JSON Flatten