JSON Formatter and Validator free online. Beautify, minify, validate JSON instantly. Syntax highlighting, error detection, tree view. No data sent to server.
JSON (JavaScript Object Notation) is the most widely used data format for web APIs, configuration files, and data exchange between applications. However JSON from APIs often comes minified — compressed into a single line with no spaces or indentation — making it extremely difficult to read and debug.
IHAVEALL JSON Formatter instantly beautifies minified JSON into readable, properly indented format with syntax highlighting. It also validates your JSON and shows exactly where any errors are — making debugging much faster. All formatting happens in your browser — no API data is ever sent to any server.
Debugging API responses from REST APIs, reading configuration files for Node.js or Python projects, validating JSON before using it in code, converting between minified and readable formats, checking nested object structures in complex data, and preparing JSON data for documentation.