Base64 Encoder / Decoder
Developer tools
JSON Formatter
Format, validate, or minify JSON locally in your browser.
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How it works
Paste JSON, choose indentation, then format or minify. Parsing and output stay on this device.
Useful notes
Formatting and minification use JavaScript number precision. Numbers may be rounded or become null if out of range; duplicate object keys retain only the last value. Original whitespace is not preserved.