JSON Formatter & Validator
Paste messy, minified, or unformatted JSON to beautify and validate it instantly. Also supports minification. Shows exact error location if JSON is invalid.
How to Format JSON Online
JSON (JavaScript Object Notation) is the most widely used data format in web APIs, config files, and databases. When JSON is minified or poorly formatted, it's nearly impossible to read. Here's how to use MoneyTechTools's free JSON formatter:
- Paste your raw, minified, or messy JSON into the Input JSON box on the left.
- Click Format / Prettify. The formatted JSON appears on the right with proper indentation.
- If the JSON is invalid, you'll see an exact error message explaining what's wrong and where.
- Click Copy Output to copy the formatted JSON to your clipboard.
What is JSON Validation?
JSON validation checks whether your text is valid JSON syntax. Common JSON errors include missing commas between properties, trailing commas (not allowed in JSON), unclosed brackets or braces, unquoted keys, and single quotes instead of double quotes. MoneyTechTools's validator catches all of these and shows you the exact error message from the browser's JSON parser.
JSON Formatting vs Minifying
Formatting (Prettifying) adds indentation and line breaks to make JSON human-readable. Use this when debugging APIs or reading config files. Minifying removes all whitespace to make JSON as compact as possible. Use this when sending JSON in network requests to reduce data transfer size.