Back to tools
Free tool
JSON Beautifier
Paste minified or messy JSON to get clean, indented, validated output. Runs entirely in your browser — nothing is uploaded anywhere.
Uses the browser's built-in JSON parser, so invalid JSON is caught and reported with a clear error instead of guessed at.
Building an API that needs to handle JSON at scale?
We design and build the API layer, not just format the payloads.