Convert Firefox AutoConfig files using byte shift 13. Upload a CFG file or paste text, then review and download the result.
How it works
- Choose Decode (-13) or Encode (+13).
- Upload a file or paste source text into the editor.
- Convert, inspect editable text when available, and download the output.
Encoded CFG bytes can be binary and may not display as readable text. Download binary results to preserve data.
Frequently Asked Questions
What is Mozilla CFG byte shift 13?
Firefox AutoConfig files may use reversible byte shifting by 13. This is obfuscation, not encryption. The configuration can also be configured without shifting.
Does the tool decode all CFG formats?
No. Many games, servers and applications use the CFG extension. This specific tool supports Firefox AutoConfig byte shifting only.
Are files stored?
No. The application sends the input to the conversion server, processes it in memory and does not persist file contents. Do not submit secrets or sensitive configuration files.