classic ciphers — free browser tool | fatcousin | fatcousin

tools→browse every utility in one place.manifesto→why fatcousin exists — local-first, no uploads.

ready

local

// fatcousin · local process monitor

00:00:00

// session started —

// tool · classic-ciphers

// origin · —

// user agent · —

// verdict · files processed locally · verify by watching NET events below

▮

NET · no outbound requests · all processing local

this panel shows everything. if something looks wrong, it is wrong. that's the contract.

caesar · rot13 · vigenère · atbash · rail fence · beaufort · encode + decode · runs locally

[cipher]

shift each letter by N positions in the alphabet (N=3 is the original Julius Caesar cipher)

[options]

shift

[input]

[output]

Wkh txlfn eurzq ira

[status]

>ready