JSON Formatter & Validator
Format, validate, and minify JSON instantly. Paste your JSON below, choose your indentation, and get beautifully formatted or compressed output.
How to Use the JSON Formatter
- Paste your JSON into the input textarea. You can paste minified or already-formatted JSON.
- Choose your indentation preference: 2 spaces, 4 spaces, or tabs.
- Click Format to beautify your JSON with proper indentation and line breaks.
- Click Minify on the Minify tab to compress JSON into a single line for production use.
- If your JSON contains errors, the tool will show the error message with approximate line number.
About JSON Formatting
JSON (JavaScript Object Notation) is the most widely used data interchange format on the web. APIs, configuration files, and databases all rely on JSON for structured data. However, raw JSON from APIs or logs often arrives as a single compressed line, making it nearly impossible to read or debug.
This JSON formatter and validator parses your JSON, checks its syntax, and outputs it with clean indentation. Formatting makes it easy to spot nested objects, find specific values, and identify structural issues. The minify option does the reverse, stripping all unnecessary whitespace to reduce payload size for production deployments. All processing happens in your browser, so your data stays private and secure.
Frequently Asked Questions
Paste your JSON into the input area and click the Format button. You can choose 2 spaces, 4 spaces, or tab indentation. The formatted result appears instantly in the output area.
Paste your JSON and click Format or Minify. If the JSON is invalid, the tool will display an error message with the approximate line number where the error was found.
Formatting (beautifying) adds indentation and line breaks to make JSON human-readable. Minifying removes all unnecessary whitespace to reduce file size, which is ideal for production use and faster data transfer.
Yes. All processing happens entirely in your browser using JavaScript. Your JSON data is never sent to any server, making it completely safe for sensitive or proprietary data.