JSON Formatter

How to use JSON Formatter

1. Paste valid JSON into the input box.
2. Choose Format JSON to pretty-print it.
3. Choose Minify JSON when compact output is needed.
4. Copy the result after the status line confirms the JSON parsed successfully.

Why this tool exists

A JSON formatter is one of the fastest ways to understand an API response, configuration object, log payload, or webhook sample. Raw JSON is compact for machines but difficult for people to scan. This tool parses the input locally, reports syntax errors, and prints a readable version with stable indentation.

Clean formatting is not just cosmetic. It helps you compare nested fields, find missing commas, spot unexpected arrays, and copy a predictable snippet into documentation or tests. The minify action does the reverse: it removes unnecessary whitespace when you need compact JSON for an environment variable, API body, or fixture.

The tool is browser-based and does not need a server to parse your text. That is useful for private API samples or internal config fragments. Still, JSON can contain secrets such as tokens, passwords, email addresses, user IDs, and internal URLs. Treat formatted output with the same care as the original input.

Use this page for strict JSON. If your data uses comments, trailing commas, or JavaScript object syntax, it is not valid JSON and will show an error. That strictness is intentional because APIs and machine-readable config usually require valid JSON.

Common examples

• Format an API response copied from browser DevTools.
• Minify a JSON object before storing it in an environment variable.
• Validate a webhook sample before adding it to documentation.

FAQ