.env to JSON Converter

In .env to JSON mode, the parser accepts blank lines, comments, optional export prefixes, common environment variable names, unquoted values, and single-, double-, or backtick-quoted values. Double-quoted newline, carriage return, tab, quote, and backslash escapes are decoded. Quoted values can span lines, while inline comments outside quotes are removed.

• By default every parsed environment value remains a string, which reflects how operating systems expose process variables.
• Optional inference converts true, false, null, and unambiguous JSON-style numbers; values such as 0012 remain strings to preserve leading zeros.
• If a key appears multiple times, the final value is emitted and a warning identifies the duplicate definitions.
• JSON output uses a prototype-safe dictionary so special names such as __proto__ remain ordinary data keys.

JSON to .env mode requires a top-level object whose keys are valid environment variable names. Strings are double-quoted and escaped, numbers and booleans are written as literals, null becomes an empty string with a warning, and arrays or nested objects become quoted JSON strings. Review structured values because the receiving application decides whether and how to parse them again.

Conversion runs in the browser and this tool does not upload field values. Dotenv syntax is a convention with implementation differences: interpolation, command substitution, export handling, and escape rules may vary between Node.js, Docker, shells, and framework-specific loaders. Validate the generated file with the exact runtime that will consume it, and prefer sanitized examples over production credentials.