JSON Flatten Tool

Flatten nested JSON into dot paths or rebuild a simple object from flattened key-value pairs.

Enter the example value or paste your own input, choose the mode when one is available, and read the first result card for the direct answer. The output area gives a copyable block for code reviews, documentation, API tests, classwork or troubleshooting notes.

What the result means

Flatten mode turns nested objects and arrays into path=value lines that are easy to scan or paste into docs.

What is not included

Unflatten mode is intentionally simple and handles dot paths with primitive string values.

Privacy note

The calculation runs in your browser. Avoid pasting production secrets, credentials, private keys, customer data or regulated personal data unless your own policy allows browser-based tools.