JSON Formatter & Validator
Format, validate, prettify, and minify your JSON data instantly.
JSON Input
How it works
This JSON formatter is designed for developers who need a fast, privacy-focused way to read JSON payloads. Just paste your clunky code block into the textbox and click "Format". It instantly detects syntax errors, highlights them in red, or successfully indents the code if it's healthy.
Frequently Asked Questions
Does the JSON string leave my browser?
No. We parse and format your JSON payload entirely within your browser using native JavaScript features. It does not get uploaded to any logs or external services.
Can this tool minify JSON?
Yes. Just click the "Minify" button next to the "Format" button to compress your JSON object down to a single line without spaces.
Does it tell me where errors are?
If your JSON is invalid, the validator stops formatting and highlights the border in red. For now it is a quick boolean check, but deep reporting is coming soon.