Letter Randomizer

How to use the Letter Randomizer

Enter the words or sentence you want to scramble.

Choose a mode: letters within each word, keep first and last letter, or everything.

Randomize, and run it again for a different arrangement.

Copy the scrambled text.

Scramble letters with the letter randomizer

The letter randomizer rearranges letters in random order while leaving the rest of your text in place. You can jumble each word separately, keep each word's first and last letter fixed, or shuffle every character of the text. Every run gives a new result, which makes it useful for word puzzles, anagram practice and classroom activities.

The three modes

Input:   According to research it does not matter

Letters within each word:
         gnAodiccr ot hrreesca ti odes tno trteam

Keep first & last letter:
         Accdinorg to reercash it deos not mttear

These are sample outputs; yours will differ each time.

Letters within each word – every word is shuffled on its own. Spaces, punctuation and word order stay put, and capital letters move along with their letter.
Keep first & last letter – only the inner letters of words with four or more characters move. Words of three letters or fewer are left as they are, since there is nothing to rearrange.
Everything – all characters, including spaces and punctuation, are shuffled together. "hello world" might become "owlodeh rll", a true anagram of the whole text.

What counts as a word?

A word is a run of letters and digits in any script. Apostrophes and hyphens split words, so in "don't" the parts "don" and "t" are shuffled separately, and in "well-known" the halves never mix. This keeps contractions and compound words recognizable.

How many scrambles are possible?

A word of n different letters has n! possible orders. Repeated letters reduce that: "matter" has 6 letters with two t's, giving 6! ÷ 2! = 360 distinct arrangements. With the first and last letter fixed, only "atte" moves, which leaves 4! ÷ 2! = 12. Short words have so few orders that a scramble can come back unchanged. A two-letter word stays the same half of the time.

Reading scrambled words

The keep-first-and-last mode recreates the popular claim that people can read words whose middle letters are jumbled. The effect is real but limited: short words and small swaps stay readable, while long words with heavily mixed middles are much harder. Try both modes on the same sentence to see the difference.

Randomness

Letters are shuffled with the Fisher–Yates algorithm and your browser's built-in random number generator. That is fine for games and exercises, but a scramble is not a way to hide sensitive text. To randomize the order of whole lines instead, use shuffle lines. For a predictable transformation there is reverse string, and for fresh puzzle material try the random word generator.

Privacy

The processing runs entirely in your browser. The text you enter is not uploaded to a server.

Frequently asked questions

How do I make a word scramble puzzle?

Enter one word per line and choose letters within each word. Each word is jumbled independently, so you get a ready-made list of puzzles; keep the original list as the answer key.

Why did a word come out unchanged?

Short words have very few possible orders, so the random shuffle can land on the original. Words of three letters or fewer are never changed in keep-first-and-last mode. Run the tool again for a new result.

Does the letter randomizer keep punctuation in place?

Yes in the two word-based modes: only letters and digits inside words move. The everything mode shuffles punctuation and spaces along with the letters.

Can I use it to generate anagrams?

Yes. For a single word, both word modes produce random anagrams. Every result uses exactly the same letters, but it is not checked against a dictionary, so most results are not real words.