> JSONGuy
Modern online JSON formatter, validator, and beautifier with syntax highlighting and collapsible tree view.
[ about ]
JSONGuy is a client-side tool that formats, validates, and beautifies JSON data directly in your browser. It supports JSON5, JavaScript-style JSON, and Python objects, handling unquoted keys, single quotes, trailing commas, comments, and None/True/False values. The tool offers live validation, instantly catching syntax errors and pinpointing their exact location. Additionally, it features a collapsible tree view for easy navigation of nested JSON structures. No sign-up is required, and all processing occurs locally, ensuring privacy and security.