Word Scrambler
Scramble the letters inside every word with a fair Fisher–Yates shuffle. Keep first and last letters fixed for the typoglycemia effect, punctuation safe.
What is the Word Scrambler?
The Word Scrambler shuffles the letters inside each word of your text using the Fisher–Yates algorithm, which makes every arrangement equally likely.
- Fair Fisher–Yates shuffle inside every word
- Keep first and/or last letters fixed — the typoglycemia mode
- Punctuation and spacing preserved
- Re-scramble with one click for a new arrangement
- Copy or download the result
- 100% in-browser and offline-friendly
How to use the Word Scrambler
- 1
Paste or type your text into the input box.
- 2
Choose whether to keep the first letter, the last letter, or both fixed.
- 3
Decide if punctuation should stay attached in place.
- 4
Click Scramble — and click again any time for a different shuffle.
- 5
Copy or download the scrambled text.
About the Word Scrambler
The Word Scrambler shuffles the letters inside each word of your text using the Fisher–Yates algorithm, which makes every arrangement equally likely. Words are scrambled independently while spaces, line breaks and (optionally) punctuation stay exactly where they were, so the text keeps its shape.
Its most famous use is the typoglycemia demo: keep the first and last letter of every word fixed, scramble the middle, and the text stays oddly readable — the effect behind the viral “Cmabrigde Uinervtisy” paragraph. It is also great for making word-game puzzles, spelling exercises and anagram-style challenges from any source text.
Press Scramble again any time for a fresh shuffle. Everything runs 100% locally in your browser — nothing you type is uploaded anywhere.
Frequently asked questions
What is typoglycemia?
It is the popular name for the effect where words remain readable when their inner letters are scrambled but the first and last letters stay put. Enable both “keep” options to recreate the famous demo with your own text.
Why do short words never change?
A word needs at least two movable letters to look different. With first and last letters fixed, words of four letters or fewer have at most one free letter, so they stay as they are.
Is the scramble random every time?
Yes. Each click of Scramble runs a fresh Fisher–Yates shuffle in every word, so every possible arrangement of the movable letters is equally likely.
What happens to punctuation and apostrophes?
With punctuation preservation on, leading and trailing punctuation stays anchored to its word, and only the letters are shuffled — “don’t!” keeps its apostrophe position and exclamation mark.
Can I unscramble the text afterwards?
Not automatically — the shuffle is random and the tool does not store a key. Keep your original text if you will need it again.
Related tools
Reverse Each Word
Reverse the letters inside each word while keeping word order and spacing intact. A fun, in-browser text tool for puzzles, obfuscation, and creative writing effects.
Shuffle Lines
Randomly shuffle the order of lines in your text with a fair Fisher–Yates shuffle. Ideal for randomizing lists, names or questions. 100% in-browser.
Anagram Checker & Rearranger
Check if two words or phrases are anagrams, ignoring case and spaces, and list letter rearrangements of a short word. Fast, private and fully in-browser.
Random Text Generator
Generate random strings with custom length and character sets, or random words from a built-in list. Great for test data, IDs and placeholders.