Runs locally
JSON Formatter
Paste JSON and format it into readable, indented output instantly.
Input is processed in your browser and is not uploaded.
Output
Results appear here.Add input to see a result.
Use this JSON formatter when raw API responses, config files, or logs are hard to read. It validates the input first, then produces consistently indented JSON that is easier to inspect and share. Lightweight, mobile-friendly, and built for quick repeat use.
FAQ
What is JSON formatting?+
JSON formatting adds indentation and line breaks to compact JSON so humans can read it more easily.
Is my JSON uploaded?+
No. The formatter runs in your browser and does not send your input to a server.
Can this fix invalid JSON?+
It shows syntax errors, but it does not guess or rewrite broken JSON automatically.