JSON Formatter & Validator

Published 2026-05-25

Format, prettify, minify, and validate JSON instantly in your browser

Try JSON Formatter & Validator free →

The problem

People often need to format, prettify, minify, and validate JSON instantly in your browser, but existing tools are bloated, slow, or require signups.

How it works

  1. Open the tool
  2. [describe input]
  3. [describe output]

No signup. No download. Runs entirely in your browser.

Why I built it

Built with vanilla HTML/JS. No frameworks, no backend, loads instantly.

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