JSON Formatter Online

✓ Free JSON Formatter, Validator & Minifier Online

Instantly format, validate, and minify JSON — 100% in your browser, no data sent to servers.

✨ Instant Formatting — Paste raw or minified JSON and see it beautifully indented in real time — no button clicks needed.
🔍 Syntax Validation — Errors are caught immediately with clear messages pointing to the exact line and position of the problem.
🗜️ One-Click Minify — Strip whitespace and compress JSON to the smallest possible size for API payloads or storage.
🔒 Privacy First — Everything runs locally in your browser using the native JSON engine. Your data is never uploaded anywhere.

⚠️ JavaScript is required This tool runs entirely in your browser and needs JavaScript. Please enable JavaScript, or open this page in a modern browser with JavaScript support, to use all features.

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