JSON Formatter
Beautify and validate your JSON data.
Instant Validation
Detect syntax errors immediately with clear error messages pointing to the line number.
Auto-Formatting
Beautify ugly, minified JSON into readable, indented structures with one click.
Minification
Compress JSON for production use to save bandwidth.
Privacy First
Your JSON data is processed locally. We never store or upload your sensitive data.
Understanding JSON Formatting
JSON (JavaScript Object Notation) is the de-facto standard for data exchange on the web. Modern APIs, configuration files, and data storage systems rely on JSON for its simplicity and universal compatibility. However, for computers to process it efficiently, JSON is often 'minified' (all whitespace removed), making it nearly impossible for humans to read or debug.
Common Use Cases
Our JSON Formatter helps developers verify API responses, debug configuration files, validate data structures, and clean up messy data exports. Whether you're inspecting REST API payloads, editing application configs, or analyzing database exports, proper formatting makes the structure immediately visible. It's especially valuable when working with third-party APIs or debugging production issues where readability is critical.
How JSON Formatting Works
Our tool parses your input using JavaScript's built-in JSON parser, validates the syntax, and applies consistent indentation (typically 2 or 4 spaces per nesting level). It adds line breaks after commas and braces, aligns nested objects, and highlights any syntax errors with precise line numbers. The minify function does the reverse—it strips all unnecessary whitespace while preserving the data structure, reducing file size for production use.