JSON Formatter and Validator

Free tools / Cordell Digital

JSON Formatter and Validator

Validate JSON syntax and produce readable or compact output.

Try the sample, paste your own input, or load a local file where offered.

How to use this tool

This checks JSON syntax, not an application schema. Very large integers can lose precision in JavaScript; represent identifiers as quoted strings.

Your inputs and files are processed in this browser. This tool does not send them to a server or save an input history. Copy or download any results you want to keep.

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