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DATA TOOLS

JSON formatting & inspection

Format, validate, inspect, and reshape JSON data.

17 specialized tools100% local processing

RECOMMENDED START

Begin with the primary workflow

Open the recommended tool, or compare the grouped alternatives below.

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FEATURED FORMATTING AND CLEANUP

JSON Formatter

format compact JSON into readable, indented data.

Local browser processing
Input validation before transformation
Syntax-aware editable output

Validation and checks3 options

JSON Validatorcheck JSON syntax and pinpoint common errors.

JSONLines Validatorvalidate one JSON value per non-empty line and report the record count.

JSON Duplicate Key Checkerdetect repeated keys within the same JSON object before parsers overwrite them.

Formatting and cleanup2 options

JSON Minifierremove insignificant whitespace from valid JSON.

JSONLines Formattervalidate and normalize JSONLines so each non-empty line contains one compact JSON value.

Analysis and utilities9 options

JSON to CSVturn an array of flat JSON objects into CSV.

JSON Key Sortersort object keys recursively while preserving array order and values.

JSON Flattenflatten nested JSON objects into configurable dot-path keys.

JSON Unflattenrebuild nested JSON objects and arrays from dot-path keys.

JSON Null & Empty Value Cleanerremove null, empty-string, empty-array, and empty-object values recursively.

JSON String Escape / Unescapeescape text as a JSON string literal or restore a JSON string to text.

JSON Tree Viewerrender nested objects and arrays as an indented text tree with value types.

JSON Diffcompare two valid JSON documents by path and report added, removed, and changed values.

JSON Path Testerresolve a safe JSONPath subset using dot properties, quoted properties, and numeric array indexes.

Generators and builders2 options

JSON Path Generatorlist stable paths for every leaf value in a JSON document.

JSON Sample Data Generatorgenerate a repeatable array of sample records from a JSON object template.