Free · No sign-up · Browser processing
JSON Flattener
Flatten nested JSON into JSON Pointer paths and restore the original structure, including arrays and empty containers.
JSON Pointer paths avoid collisions between dots in keys and nested properties. Empty objects and arrays remain intact.
STEP 1
Enter or paste your input
The example is ready to edit. Your input stays in this browser.
STEP 2
Choose your settings
Change the direction or options only if you need to.
Processed locally in your browser. Avoid sharing the result if it contains private data.
How to use JSON Flattener
- Paste your input or load the included example.
- Choose the conversion direction and check the expected format.
- Select Flatten, then inspect the result or any validation message.
- Copy or download the output for your workflow.
Format and limitations
JSON Pointer paths avoid collisions between dots in keys and nested properties. Empty objects and arrays remain intact.
Example input
{"user":{"name":"Ada","roles":["admin"]}}Practical guides
- How to Flatten Nested JSON Without Losing Structure — Flatten nested JSON for exports and debugging while preserving arrays, empty containers, and keys that contain dots.
- JSON Pointer Explained: Paths, Arrays and Escaped Keys — Learn JSON Pointer syntax, including /0 array indexes, ~0 and ~1 escaping, and the empty root pointer.
Does this tool upload my input?
The transformation runs in your browser. This tool does not send input to a conversion API. Browser memory limits still apply; split very large inputs into manageable batches.