Free Online JSON Tools

Seven focused, browser-based tools for every JSON task. All processing runs locally — your data never leaves your device. No sign-up required.

JSON Formatter & Beautifier

Pretty-print JSON with configurable indentation, minify it to a single line, or sort object keys alphabetically. Free online JSON formatter and beautifier.

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JSON Viewer & Tree Explorer

Browse JSON as an interactive, collapsible tree. Search keys and values, copy any node or path, and inspect data types, counts and size stats.

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JSON Editor with Validation

A live JSON editor with syntax highlighting, inline error detection, undo/redo and one-click auto-format. Edit JSON safely in the browser.

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JSON Validator & Schema Checker

Strictly validate JSON with precise line and column error messages. Optionally validate data against a JSON Schema. Free online JSON validator.

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JSON Diff & Compare

Compare two JSON files side by side with added, removed and changed highlighting plus a structured diff summary. Works with large objects.

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JSON Converter

Convert JSON to and from CSV, YAML and XML, and generate TypeScript interfaces, Go structs and SQL statements from any JSON document.

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JSONPath Query Tester

Run JSONPath expressions against any JSON document and inspect the matched results instantly. A fast online JSONPath evaluator and tester.

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