Game Config JSON Formatter & Validator
Clean up and verify the JSON behind your mods and game scripts.
Format, minify, and validate game config and mod JSON — fix trailing commas, quote keys, and spot the exact error line.
JSON that games actually accept
Scenario: a mod won’t load and the log says “unexpected token.” The usual culprits are a trailing comma, an unquoted key, or a single instead of double quote — all valid in some languages, none in JSON.
Example: paste { "level": 12, } (trailing comma) and Validate flags it; Format rewrites it to strict JSON the game can parse.
Boundaries: this validates standard JSON only. Game-specific formats that wrap JSON (comments, .jsonc, arrays of objects) may need a trim first. It never uploads your config — everything runs locally.
FAQ: why Minify? Minified JSON is smaller to ship in a mod and avoids whitespace differences that trip some strict parsers. Format is for editing; Minify is for shipping.