Dart String Obfuscator

String obfuscation is the practice of transforming readable string literals in source code into equivalent representations that are hard for humans and automated tools to understand. Instead of writing 'Hello', you might write String.fromCharCodes([72, 101, 108, 108, 111])or String.fromCharCodes(base64.decode('SGVsbG8=')). Both produce the same string at runtime but look completely different in your source code.

The Dart String Obfuscator applies six distinct transformation techniques.Hex escapes convert each character to its hex byte value.String.fromCharCodes represents each character as a code point integer.Base64 decoding wraps the encoded string in base64.decode() from dart:convert.XOR encryption XORs each byte with a random key and generates decryption code.Split concatenation breaks the string into hex-encoded pieces joined with +.StringBuffer + writeCharCode builds the string character by character. Each technique uses randomization to produce different output on every generation.

String obfuscation is particularly important for Flutter and Dart applications because Dart code can be reverse-engineered from AOT-compiled snapshots and kernel files. While a determined reverser can run the obfuscated code to recover original strings, obfuscated strings make automated scanning and pattern matching significantly harder. For best results, combine string obfuscation with Dart's built-in --obfuscate flag, which renames symbols, and use split concatenation for critical strings that should not appear in full anywhere.

This tool runs entirely in your browser using client-side JavaScript. Your input strings and the generated obfuscated outputs never leave your device. There are no API calls, no server-side processing, no data storage, and no tracking. The obfuscation engine uses JavaScript's built-in string and number methods for all transformations - everything is local and private.