How to format JSON safely in the browser

JSON Formatter parses and indents in your browser. It does not send the payload to a server. Use it for API responses, config snippets, or JSON buried in logs.

When to use it

• An API response is one long line and you need the structure
• A config file has extra spaces and you want a single line
• You are not sure whether a snippet is valid JSON

Common errors

Keys must use double quotes. Trailing commas, single quotes, and comments will fail. The tool shows the parser message directly.

Open JSON Formatter or go back to the tool list.