Formatter JSON
Format, validate and beautify JSON instantly. Detect syntax errors with clear messages. Free online JSON formatter tool.
JSON (JavaScript Object Notation) has become the universal language of data exchange across the web — used in REST APIs, configuration files, databases and almost every modern software system. But raw, minified JSON is virtually unreadable to the human eye, and even a single misplaced comma or unclosed bracket will cause a complete parse failure. Our JSON formatter and validator instantly beautifies any JSON string into properly indented, colour-highlighted output, while simultaneously validating its syntax and pointing to the exact location of any error.
JSON formatting is a cornerstone of modern developer workflows. If you work with encoded data, our Base64 Encoder/Decoder pairs perfectly with JSON work — many APIs transmit binary or sensitive JSON data in Base64 encoding, and being able to decode it instantly is an essential debugging skill for any backend or full-stack developer.
For time-sensitive API responses and database records, our Unix Timestamp Converter translates the epoch timestamps that appear in virtually every JSON API response into human-readable dates — an indispensable tool when debugging date-related logic in any modern application.