Baconian cipher encode
Baconian cipher encode, classical cipher, a puzzle not a protection, computed on your device. Non-letters pass through this direction, but they carry no information and the decoder drops them: a round trip returns lowercase letters only, so "The fox jumps, 42 times!" comes back as "thefoxjumpstimes".
Runs on your device. The file is never uploaded.
Baconian cipher encode turns each letter into five A and B symbols, on the 26 letter variant where a is AAAAA and z is BBAAB. Digits, spaces and punctuation come through this direction untouched. A tool built on the 24 letter variant, where I and J share one code, disagrees with this one on every letter after I.
Questions
What does Baconian encoding produce?
Five-symbol groups of A and B, one group per letter, which is a binary code from 1605. It was designed to be hidden inside the appearance of an innocent text, for example by using two typefaces, rather than sent as visible AABBA groups.
Does encoding then decoding return my text?
Not exactly, and this is a property of the cipher. The repository records the measured round trip: "The fox jumps, 42 times!" comes back as "thefoxjumpstimes". Case, punctuation, digits and spaces have no representation in the code, so they are gone.
Which alphabet variant is this?
Read the tool page for the exact mapping before comparing with another site. Bacon has both a 24-letter version, where I and J share a code and so do U and V, and a 26-letter version. Two tools using different variants will disagree on those letters.
Is it a cipher or an encoding?
An encoding. There is no key, so anyone who recognises the five-symbol pattern reads it. Its historical value was steganographic, hiding the message in the presentation of another text.