Guide
How to Format JSON Safely in Your Browser
Work with API payloads and config files in a browser-based JSON formatter without sending data away.
When local formatting helps
Local formatting is useful for tokens, API responses, configuration blobs and debug payloads that should not be pasted into unknown third-party tools.
It also removes the friction of switching to a heavy editor when you only need to validate or minify a payload quickly.
What to check before sharing
Formatting makes secrets easier to read, which also means you should redact anything sensitive before screenshots or documentation.
If the parser fails, look for trailing commas, unquoted keys or comments that are not valid JSON.