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JSON Formatter & Validator — Free Online Tool

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root:{4}
:
:
:[3]
:
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Free online JSON formatter, validator, and tree viewer

Beautify, minify, validate, and sort JSON in your browser. Edit raw JSON with Monaco or explore objects and arrays using the synchronized, expandable JSON tree editor.

Free online notepad

Write plain text, notes, Markdown, or code instantly. Your current document is restored from this device after a refresh.

JSON formatter, validator, and viewer

Beautify or minify JSON, find syntax errors, sort object keys, and edit values using synchronized text and expandable tree views.

Secure token generator

Generate API keys, secret keys, UUIDs, hex tokens, and Base64 secrets with the browser Web Crypto API.