Protect Ruby source code from unauthorized access and reverse engineering. Variable renaming, string encryption, and control flow obfuscation for Rails apps, gems, and scripts.
Ruby ships as source. A published gem or a deployed Rails app puts your implementation directly in the reader's hands, and Ruby's readability, usually a virtue, works against you when the goal is to keep logic private.
Joker encrypts string literals with per-build keys, renames methods and variables to unreadable identifiers, and restructures control flow to resist both manual reading and automated deobfuscation. It works with Rails applications, gems, and standalone scripts while keeping behavior identical.
All string literals encrypted with per-build keys. Decoded only at runtime.
Methods, local variables, and instance variables renamed to unreadable identifiers.
Code logic restructured to resist manual analysis and automated deobfuscation.
Works with Ruby on Rails applications, gems, and standalone Ruby scripts.
What protection actually adds over shipping plain Ruby.
| Typical tools | Joker | |
|---|---|---|
| Strings | Plaintext | Encrypted, per-build keys |
| Identifiers | Readable | Renamed to noise |
| Control flow | Linear and clear | Restructured |
| Rails and gems | n/a | Supported |
Drag and drop your file into the dashboard or use our Discord bot.
Select light, medium, or heavy protection based on your needs.
Get your obfuscated file with unique VM encryption. Ready to deploy.
Yes. Obfuscate your business logic files while keeping configuration and views readable.
Yes. Obfuscate the source files of your gem before publishing to protect your implementation.
Standard Ruby patterns are supported. Highly dynamic metaprogramming using string-based method names should be tested.