Cryptogram Puzzle Generator
Turn a quotation into a letter-substitution puzzle, then solve it here with frequency analysis.
William Shakespeare, Hamlet
30 letters counted · 20–3000 accepted.
The punctuation and word breaks of the original are kept, so spaces and commas still read normally.
Medium: a full random substitution over all 26 letters, so frequency analysis gives you a real foothold.
0–5 cipher letters pre-revealed, most frequent first. Hints stay locked and are restored by Clear.
No puzzle yet
Pick a quotation or paste your own text, choose a difficulty and hit Generate puzzle.
About this tool
This generator turns a quotation or your own text into a cryptogram — a letter-substitution puzzle where one cipher alphabet stands for the whole plaintext — with an easy rotation mode, a full random substitution and a harder derangement that avoids letter-to-letter and common-letter-pair giveaways. You solve it in the page with shared letter cells, hints, mistake checking, a real frequency chart and PNG, print and answer-key exports. Everything — cipher generation, analysis and export — runs entirely in your browser, and nothing you type is uploaded anywhere.
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is Cryptogram Puzzle Generator really free?
Yes. Cryptogram Puzzle Generator is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does Cryptogram Puzzle Generator upload my data?
No. Cryptogram Puzzle Generator runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and Cryptogram Puzzle Generator is ready to use on desktop or mobile.
Does Cryptogram Puzzle Generator work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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