JSON Formatter & Validator – Beautify, Minify & Validate JSON Online Free

Free online JSON formatter, validator and minifier. Paste your JSON to instantly beautify, minify, or validate it. No signup required. Works in browser with localStorage persistence.

JSON Formatter

About

Format, validate and minify JSON instantly in your browser. No data leaves your device.

AUTO-SAVE Input persists on page reload via localStorage.

How to Use

Paste JSON in the left editor.
Click Beautify to pretty-print.
Click Minify to compress.
Click Validate to check syntax.
Use Copy Output to copy result.

Stats Explained

Size — Byte size of JSON string.

Keys — All object keys recursively.

Depth — Maximum nesting level.

Arrays — Total arrays in structure.

Root — Type of root element.

Ready

Input JSON

Output

Size: — Keys: — Depth: — Arrays: — Root: —

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