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Private JSON Formatter & Validator

The secure, offline JSON formatter. Beautify, validate, and minify JSON directly in your browser using client-side processing. Your API keys, tokens, and sensitive data never leave your device.

Built & maintained by Shakeel Ahmed · Full-Stack Developer & Privacy Tools Builder

Indent:
Formatted output appears here
JSON cleaned up? You can compare it against another version, or validate a regex pattern.Code Diff Checker

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What is JSON formatting?

JSON (JavaScript Object Notation) is the universal data exchange format for APIs and web applications. Formatting adds proper indentation to make nested structures readable. Minifying removes whitespace to reduce file size. Validation checks that the JSON is syntactically correct.

Your data stays private

This JSON formatter runs entirely in your browser using JavaScript. No data is ever sent to a server. Safe for API keys, tokens and sensitive payloads.

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