Arma Reforger Config.json Validator
Free JSON Schema Validation for PC & PlayStation 5 Servers
Validate your Arma Reforger server configuration against the official JSON schema with real-time error detection. Catch formatting issues, missing required fields, and invalid settings before deployment to ensure your server starts correctly.
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Real-Time Validation
Instant feedback as you type. Catch JSON syntax errors, missing brackets, and invalid formatting before your server fails to start.
Schema Compliance
Validates against official Arma Reforger schema. Ensures all required fields are present and values are within acceptable ranges.
Error Details
Detailed error messages pinpoint exact problems. Line numbers, descriptions, and fix suggestions help you resolve issues quickly.
PS5 Compatibility
Checks PlayStation 5 specific requirements. Validates crossplay settings, mod compatibility, and console-specific configurations.
Security Checks
Validates admin passwords, RCON settings, and BattlEye configuration. Ensures your server security settings are properly configured.
Free & Private
Completely free with no registration. Validation happens in your browser - your config.json never leaves your computer.
Common Config.json Errors
Missing Comma or Bracket
JSON requires commas between properties and matching brackets. Our validator highlights exactly where punctuation is missing.
Error: Expected comma or closing bracket at line 15Invalid Port Number
Ports must be between 1024-65535. Common mistake is using port 80 or 443 which require administrator privileges.
Error: gameHostBindPort must be between 1024 and 65535Wrong Workshop Mod ID
Mod IDs must be valid hexadecimal strings from Steam Workshop. Copy the ID directly from the mod's URL.
Error: Invalid Workshop mod ID format in mods arrayMissing Required Fields
Some fields like gameHostBindPort and region are required. The validator checks that all mandatory settings are present.
Error: Required property 'gameHostBindPort' is missing