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Cryptogram Generator for KDP

Type a quote or a proverb, get a print-ready cryptogram page and its answer key. Free, no account, no watermark, and the PDF is yours to publish and sell on Amazon KDP.

A quote, a proverb, a line from your own book. Only letters are encrypted, so punctuation and numbers are left out of the puzzle.

Try one:

Type a phrase to encrypt first.

What makes it print-ready

  • Vector PDF, not a screenshot. Codes and answer boxes are real page geometry, crisp at any print size.
  • Room to write. Every code sits over a box sized for a pencil, and words never split across lines.
  • A fair cipher. No letter ever stands for itself, and the same letter always gets the same code throughout the phrase.
  • No watermark, no attribution line. Not on the free tier, not as a trial.

How to use it

  1. Type or paste a phrase of up to 60 letters, or pick one of the proverbs to try it out. The box under it shows exactly what will be encrypted.
  2. Choose a cipher. Letters for the classic style, numbers for younger solvers and large print.
  3. Set the hints. Two or three filled-in letters suit most adults. Add the letter key if your readers like to keep notes.
  4. Generate, then generate again. Each press makes a new cipher for the same phrase.
  5. Check the answer key in the tab above the preview, then download a two-page PDF or a ZIP of 300 DPI PNGs.

Choosing phrases that solve well

Solvers crack a cryptogram through patterns: short words, double letters, the letter that turns up most. A phrase that gives them something to work with is a better puzzle than a clever one that gives them nothing.

  • Include a few short words. A, I, THE and AND are where most solvers start.
  • Aim for 30 to 60 letters. Below that there are too few repeats to reason from, and the puzzle becomes guessing.
  • Keep a book on one theme. Proverbs, quotes from one era, lines about one subject. A theme sells better than a grab bag and gives the solver context.
  • Check the rights first. Public-domain proverbs and older quotes are free to print. Anything recent belongs to somebody.

From one page to a book you can publish

One cryptogram is not a book. KDP requires at least 24 pages for a paperback, and a cryptogram book usually holds 100 or more puzzles, each numbered, with every answer gathered in a section at the back. Assembling that a page at a time means renumbering every puzzle and rebuilding the answers by hand.

Book Studio is the paid editor that does that part: a whole set of cryptograms in one run with no repeats, numbered puzzles with a matching answer section, every KDP trim size, and an export checked against KDP’s print rules.

For the publishing side, trim, page count, categories and price, see How to publish a puzzle book on Amazon KDP.

Build a full cryptogram book in Book Studio →

Just want one to solve?

If you are here to solve rather than to publish, there is a free printable cryptogram ready to print, with its answer.

Frequently asked questions

Is this cryptogram generator really free?

Yes, and it needs no account. Every visitor gets a set number of free puzzles per day, shared by all the free puzzle makers and shown as a counter next to the Generate button. The PDF has no watermark and no attribution line.

Can I sell a cryptogram I make here on Amazon KDP?

The page is yours, but the words have to be yours to print as well. Proverbs and quotes from writers long out of copyright are free to use. A line from a living author, a recent book or a song lyric may not be, and encrypting it does not change that. KDP also requires at least 24 pages for a paperback, so one page is a sample, not a book.

Why did my punctuation and numbers disappear?

A cryptogram replaces each letter with a code, so only letters are encrypted. The maker leaves punctuation and digits out of the puzzle and shows you, under the box, exactly what it will encrypt before you press Generate. Accented letters are encrypted as their plain form, so É becomes E.

How long can the phrase be?

Up to 60 letters and spaces. That is a short quote or a proverb, which is also the length most cryptogram solvers enjoy on a single page. Shorter phrases are harder, because there are fewer repeated letters to work from.

Letters or numbers — which cipher should I pick?

Letters is the classic newspaper style, where every letter stands for another letter. Numbers replaces each letter with a number from 1 to 26, which many younger solvers and large-print readers find easier to track. Either way, no letter ever stands for itself.

What are the hint letters and the letter key?

Hint letters are filled in for the solver before they start, which makes the puzzle easier; two or three suit most adult readers, more suit children. The letter key is a row of boxes under the puzzle where the solver notes what each code stands for as they work it out.

Does it make an answer key?

Yes. Press Answer key above the preview to see the decoded phrase. It rides along in both downloads, so the PDF is two pages and the ZIP holds two PNGs, and it costs nothing extra.

Can I make a whole cryptogram book here?

Not on this page. It makes one puzzle at a time from a phrase you supply. Book Studio is the paid editor that builds the book: a full set of cryptograms in one run with no repeats, numbered puzzles with an answer section at the back, every KDP trim size, and margins sized for your final page count.

Do you keep my phrase?

No. Nothing about a generated puzzle is stored: no project, no saved copy, no file. The page is made and sent straight back to you.