JSON Formatter Online
Paste JSON below to instantly format, beautify and validate
About This Tool
A JSON formatter is an essential tool for developers working with APIs, configuration files, and data pipelines. Raw JSON returned from APIs is often minified — stripped of whitespace and newlines to reduce payload size. While efficient for transmission, minified JSON is nearly impossible to read or debug manually. Our free online JSON formatter instantly transforms minified or poorly structured JSON into clean, indented, human-readable output. Simply paste your JSON, click Format, and get perfectly formatted output with consistent indentation. JSONView's JSON formatter also validates your JSON as it formats — if there are syntax errors, you'll see the exact line and character position of the problem. Use it to debug API responses, review configuration files, inspect webhook payloads, or clean up JSON data before committing to your codebase. Works entirely in your browser — your data never leaves your device.
How to Use
- Paste your raw or minified JSON into the input area above
- Click the Format button or press Ctrl+Enter
- Copy the formatted output using the Copy button