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JSON Tools

Parse, validate, format, compare, and convert JSON data. All tools run 100% locally in your browser for maximum privacy and speed.

JSON Parser & Formatter

Format JSON and convert between JSON strings and objects

Validate JSON syntax, structure and minify the JSON

JSON Compare Online

Compare JSON files online and find differences instantly - free JSON diff tool with deep comparison

JSON to TOON Converter

Convert between JSON and TOON format - Token-efficient, schema-aware data format for LLMs

Python Dict to JSON

Convert Python dictionaries to JSON - handles True/False/None, quotes, trailing commas, and tuples

Convert CSV data to JSON format with header detection

Export JSON data to CSV format

CSV-JSON Converter

Bidirectional conversion between CSV and JSON formats