How to Read and Write Morse Code
Learn the dot-and-dash alphabet, the spacing rules, and a reliable workflow for writing, reading, and checking International Morse code.
Guides & Articles
Long-form tutorials, deep dives and history behind the ciphers and codes powering our tools.
How-to
How to Understand and Decode Base64
A practical guide to recognizing Base64, decoding it into bytes or text, understanding padding, and avoiding the common mistake of treating it as encryption.
How to Decrypt a Caesar Cipher by Hand
A step-by-step guide to breaking a Caesar cipher with pen and paper by trying every shift, using letter frequencies, and testing likely words.
How to Decrypt a Message Without the Key
A practical workflow for identifying an unknown cipher, choosing a suitable attack, and deciding whether a keyless recovery is realistically possible.
How to Solve a Substitution Cipher
A systematic way to solve a simple substitution cryptogram using word patterns, letter frequencies, cribs, and a consistent mapping table.
Lists & roundups
Top 15 Ciphers for Escape Rooms
Choose a cipher that feels like a clue, not homework. This ranked list explains 15 practical options for escape-room puzzles, with their setup needs, strengths, and failure modes.
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