Free, runs entirely in your browser — no sign-up, no file upload to a server.
What does JSON Beautifier do?
It pretty-prints JSON with your choice of indentation width, making nested data easy to read.
How do I use it?
Paste your JSON, pick an indentation size, and the formatted result appears ready to copy.
Is my input sent anywhere?
Everything runs in your browser — nothing you type or paste is sent to a server.
How do I report a problem or request a feature for this tool?
Use the Contact / Feedback page — select "JSON Beautifier" as the related tool so we know exactly which tool you mean, then describe the bug or the feature you'd like to see.