JSON tools that stay on your machine
Format, validate, minify, convert, diff and query JSON. Every operation runs in your browser, so payloads with customer data or access tokens never leave your device.
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The tools
- JSON FormatterPaste minified JSON and read it. Indentation, key sorting and precise error positions — all in the browser.
- JSON ValidatorCheck a document against RFC 8259 and get the exact line and column of the first error.
- JSON MinifierStrip whitespace and newlines to cut payload size before you ship.
- JSON ConverterTurn JSON into YAML, XML, CSV or TypeScript interfaces — in the browser, no upload.
- JSON DiffCompare two documents field by field. Key order is ignored, so reordered responses stay clean.
- JSONPath TesterWrite an expression, see the matches as you type. Recursive descent, wildcards and filters supported.
Looking for image, encryption, finance or date tools? Those are currently available on the Chinese site, and are being translated.