What is typoglycemia?

Typoglycemia is the brain's ability to read words even when internal letters are scrambled, as long as the first and last letters remain in place. Skilled readers process words by their shape and context, not by reading every letter in sequence.

Why are short words left unchanged?

In readable mode, words of three letters or fewer have only one middle letter or none, so there is nothing to shuffle without moving the first or last letter. In "Scramble every letter" mode, any word of two or more letters is mixed.

Is my text sent to a server?

No. All scrambling happens entirely in your browser using JavaScript. Your text never leaves your device.

Does the scrambler preserve punctuation?

Yes. Only letters move. Commas, periods, quotes, digits, apostrophes and hyphens keep their exact position, so "don't" and "well-known" are scrambled part by part and the sentence structure stays intact. Accented letters such as é or ü are treated as letters.

Can I scramble the same text multiple times?

Yes. Each click of "Scramble Text" produces a new random arrangement of the middle letters, so you can generate multiple variants of the same passage.

Can I scramble every letter of a word, including the first and last?

Yes. Select "Scramble every letter (puzzle)" before you click Scramble Text. Every letter of each word is shuffled, and the tool re-shuffles when a result comes out identical to the original word, which is what you want for a word jumble puzzle.

Why can I still read scrambled words?

Readers recognize familiar words partly from their outer letters and overall shape, so moving only the middle letters often leaves short, common words readable. Long or unfamiliar words get much harder, and studies show reading still slows down.

Word Scrambler

Scramble the internal letters of each word while keeping the first and last letters in place (the typoglycemia effect), or mix every letter to make word puzzles.

By default this word scrambler shuffles the inside letters of every word longer than three letters and keeps the first and last letters fixed.

Original Text

Keep first and last letter (readable) Scramble every letter (puzzle)

Scrambled Text

Try a sample

Quick answer

By default this word scrambler shuffles the inside letters of every word longer than three letters and keeps the first and last letters fixed. Text stays readable this way, the effect behind the well-known "Cmabrigde" message. "Scramble this sentence" can become "Sbamrcle tihs snetecne". Pick "Scramble every letter" to mix whole words for a word jumble puzzle.

Examples

Word	One possible scramble
reading	rdaeing
computer	cmotpuer
scramble	sbmracle
cat	cat (3 letters or fewer stay the same)

Paste your text, scramble it and copy the result.

Summary

Word Scrambler rearranges the middle letters of every word in your text while leaving the first and last letters intact. This exploits the typoglycemia phenomenon, which shows that skilled readers can still recognize words even when their internal letters are shuffled. Paste any text, click Scramble, and copy the result instantly.

How it works

Paste or type your text into the input box.
Choose "Keep first and last letter" for readable text or "Scramble every letter" for a puzzle.
Click "Scramble Text" to shuffle the letters of each word.
In readable mode, words shorter than four letters are left unchanged.
Numbers, punctuation, apostrophes, hyphens and whitespace stay exactly where they were.
Click "Copy Result" to copy the scrambled text to your clipboard.
Click "Reset" to restore the original unscrambled text.

Use cases

Demonstrate the typoglycemia reading phenomenon to students or colleagues.
Generate scrambled text for reading-speed research experiments.
Create quirky social media posts or conversation starters.
Test proofreading tools and spell-checkers for robustness.
Produce obfuscated-looking text that is still human-readable.
Add a playful twist to blog posts or creative writing drafts.

Frequently Asked Questions

Last updated: 2026-05-23 · Reviewed by Nham Vu