A1Z26 encode
A1Z26 encode. A classical cipher, computed on your device.
Runs on your device. The file is never uploaded.
A1Z26 encode lowercases your text and replaces each letter with its alphabet position, 1 through 26, joined by single spaces. Everything that is not a letter is dropped, so word boundaries and punctuation go with it. There is no decoder here, and the numbering is public, so the output keeps nothing back from a reader.
Questions
What does A1Z26 produce?
Each letter becomes its position in the alphabet, so a becomes 1 and z becomes 26, separated by spaces. Your text is lowercased first and anything that is not a letter is dropped.
How do I read it back?
Map the numbers to letters by hand or with a text tool. There is no decoder here, and the format is ambiguous anyway: without the separators, 1 2 and 12 look the same.
Why did my punctuation disappear?
Only the 26 letters have a number, so spaces, digits and punctuation have nothing to map to and are removed. Word boundaries are lost with them.
Is this a cipher?
It is an encoding with no key, common in puzzle hunts and escape rooms. Anyone who recognises the pattern reads it instantly.