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FTools

JSON Formatter

Format, minify, validate, and clear JSON safely.

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How to Use JSON Formatter

  1. Paste JSON into Input JSON.
  2. Click Format to beautify or Minify to compact.
  3. Read the exact parser error if JSON is invalid.
  4. Copy or download valid output.

Why Use This Tool?

Readable indentation makes APIs and configuration easier to inspect, while minification reduces payload size for tests and examples.

Frequently Asked Questions

Which JSON syntax is supported?
The tool follows standard JSON: double-quoted keys and strings, no trailing commas, no comments, and no single quotes.
What happens with invalid JSON?
The input remains untouched and the tool shows the parser's explanation instead of crashing or guessing.
Is API data uploaded?
No. Parsing and formatting happen entirely in your browser.

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