# dcode > Recursively detect and decode strings, supporting hex, decimal, binary, base64, URL, FromChar encodings, Caesar ciphers, and MD5, SHA1, and SHA2 hashes. > Warning: uses 3rd-party web services for MD5, SHA1 and SHA2 hash lookups. For sensitive data, use `-s` to avoid these services. > More information: . - Recursively detect and decode a string: `dcode "{{NjM3YTQyNzQ1YTQ0NGUzMg==}}"` - Rotate a string by the specified offset: `dcode -rot {{11}} "{{spwwz hzcwo}}"` - Rotate a string by all 26 possible offsets: `dcode -rot {{all}} "{{bpgkta xh qtiitg iwpc sr}}"` - Reverse a string: `dcode -rev "{{hello world}}"`