Plums

JSON Formatter & Minifier

Format, minify, and validate JSON in your browser. Useful for API debugging, config cleanup, and log inspection — no upload.

JSON input

Output

Characters
0
Lines
0
Size
0 B

All JSON processing happens locally in your browser — nothing is uploaded.

How to use the JSON formatter

Paste API responses, config files, or log snippets to make JSON readable, or minify it into one line for transport and storage.

  1. Paste JSON text into the input box.
  2. Click Format for indented JSON, or Minify for compact one-line JSON.
  3. Review the result and copy the output.
Your JSON stays in this browser, which is useful for API payloads and local configuration.

Frequently Asked Questions

Can this validate JSON?

Yes. If the JSON syntax is invalid, the page shows the parsing error returned by the browser.

What is the difference between format and minify?

Formatting adds indentation and line breaks for readability. Minifying removes extra whitespace for transfer or storage.

Is my JSON uploaded?

No. Parsing, formatting, and minifying all run locally in your browser.

Can it handle large JSON files?

It handles common API responses and config files. Very large inputs depend on browser memory and device performance.

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