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100% Client-Side Processing
📦

JSON Formatter & Validator

Dev Utility

Clean, format, minify, and validate JSON data instantly. Detect syntax errors with line numbers locally in your browser.

Pure JavaScript · zero dependencies

Validate, beautify, and minify JSON entirely in your browser. Syntax errors include line and column hints — nothing is sent to a server.

Raw JSON
Formatted output
Formatted JSON will appear here after you paste valid input.