Paste text and review every likely Caesar shift. The same engine powers the Cryptogram Solver.
Start with the puzzle in front of you, then check the result against what you can actually place, read, or mark.
Updated: May 23, 2026. Board cells, clue lines, letter rows, images, and cipher text stay editable before you solve.
Start here when every letter appears shifted by the same amount, as in a Caesar cipher, ROT cipher, or simple alphabet shift puzzle.
The classic Caesar cipher uses shift 3, but puzzle makers can use any shift from 0 to 25. That is why the page shows both a selected shift and all possible shifts.
Paste the cipher text and click Decode shifts. The readable answer usually appears as normal words, punctuation, and sentence shape in one of the 26 candidates.
If several rows contain partial words, check whether the original text has names, abbreviations, or unusual spelling. A short cipher can be harder to identify than a full sentence.
ROT13 is a Caesar cipher with shift 13. It is common in simple online puzzles because applying the same shift again returns the original text.
Other ROT ciphers work the same way. The solver keeps punctuation and spaces in place while shifting letters, which makes the result easier to scan.
If no shift produces readable text, the puzzle is probably not a Caesar cipher. It may be a substitution cryptogram where each letter has its own mapping.
Move to the Cryptogram Solver when you need frequency analysis, word pattern hints, and an editable substitution preview.
A result only helps when the input matches the real puzzle. Check these points before using a move, word path, cipher hint, or filled grid.
Reviewed by: PuzzleToolbox editors. Last reviewed: May 23, 2026.
The tools do not play games for you or keep an account profile. They work from the input on the page. If a result looks wrong, fix the board, clue list, image grid, or cipher text and run it again.
Solver logic is checked with sample puzzles, edge cases, and browser flows before updates go live. Image and OCR results stay editable because screenshots, lighting, and cropped boards can change detection quality.
A Caesar cipher replaces each letter with another letter a fixed number of positions away in the alphabet.
No. Caesar decoding runs in your browser and does not require an account.
ROT ciphers are Caesar-style shifts. ROT13, for example, shifts letters by 13 positions.
The text may be a substitution cryptogram, Vigenere cipher, or another cipher type. Try the Cryptogram Solver for frequency hints.