JSON Flatten
JSON Flatten is a free online JSON Tools tool that collapse a nested JSON object into dotted keys with array indices instantly in your browser. Paste your data, adjust the options and get the result in real time — no installation, no sign-up, and nothing is ever uploaded to a server.
Description
Collapse a nested JSON object into dotted keys with array indices.
- Because everything is computed client-side, JSON Flatten is safe to use with sensitive data such as API keys, tokens or private logs.
How to use
Using JSON Flatten takes three steps:
- Paste your data into the input box (or load the example).
- Configure the options to match your target format or scenario.
- Copy, download or inspect the output — it updates live as you type.
Examples
These ready-made examples show typical inputs and the exact output JSON Flatten produces for them.
{"user":{"name":"Ada","tags":["a","b"]},"count":2}Nested object flattened to dotted keys with array indices such as user.tags[0].
Use cases
Common situations where JSON Flatten helps:
- Collapse a nested JSON object into dotted keys with array indices.
- Because everything is computed client-side, JSON Flatten is safe to use with sensitive data such as API keys, tokens or private logs.
FAQ
What is JSON Flatten?
JSON Flatten collapse a nested JSON object into dotted keys with array indices. It runs entirely in your browser, so your data stays private.
Is JSON Flatten free to use?
Yes. JSON Flatten is free, unlimited and works without registration or installation.
Does my data get uploaded?
No. All processing happens locally in your browser; nothing is sent to any server.