ClickSail
ClickSail

JSON Formatter

Prettify or minify JSON data.

Pro Tip: Working with encoded API responses? Use the Base64 Decoder to decode the payload before formatting.
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Works well with

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How to use

How to use JSON Formatter

Turn unreadable one-line JSON into something you can actually debug.

  1. Paste raw JSON into the editor.

  2. Choose prettify (indented) or minify (compact single line).

  3. Copy or download the formatted output for your app or API.

Common questions

What if my JSON is invalid?

The formatter surfaces parse errors with line context so you can fix syntax before formatting.

Does minifying change the data?

No. Only whitespace is removed — keys, values, and structure stay identical.

Large payloads?

Works in-browser for typical API responses. Very large files may hit memory limits.

Runs in your browser · Your input is never uploaded · Free with no account