tool.json.formatTab
tool.json.minifyTab
tool.json.validateTab
tool.json.typescriptTab
tool.json.pathTab
tool.json.diffTab
tool.json.schemaTab
tool.json.indent
tool.json.indent2
tool.json.input
tool.json.output
JSON (JavaScript Object Notation) is the standard data format for web APIs, configuration files, and data exchange between systems. Our JSON Formatter tool helps you beautify, minify, and validate JSON data instantly in your browser — no server uploads, no signup required.
Whether you're debugging an API response, formatting a config file, or validating JSON syntax before deployment, this tool handles it all. Paste your raw JSON and get beautifully indented output with customizable indent sizes (2, 4, or 8 spaces). The built-in validator highlights syntax errors so you can fix issues quickly.
You can also convert JSON to TypeScript interfaces, query data with JSONPath, and compare two JSON files side-by-side to spot differences. All processing happens locally in your browser, so your data never leaves your device.
Paste your JSON into the input area and click "Format". The tool will add proper indentation and line breaks to make it human-readable. You can choose 2, 4, or 8 space indentation.
Yes. The Validate tab checks your JSON for syntax errors and reports the exact location of any issues. Valid JSON will show a success message.
Absolutely. All JSON processing happens entirely in your browser. No data is sent to any server.