Swap Letters Tool – Scramble Words & Manipulate Text Online

Text is usually rigid. Words are spelled a specific way, and letters follow a strict order. But sometimes, you need to break those rules. Whether you are creating a difficult puzzle, obfuscating an email address to stop spambots, or testing the "Typoglycemia" reading theory, manipulating the letters within words is a powerful technique.

Welcome to the Swap Letters Tool. This is a multi-purpose utility designed to swap, scramble, and replace characters inside your text instantly. Unlike standard text editors, this tool focuses on the structural arrangement of the letters themselves.

Four Powerful Modes

1. Swap Adjacent Characters

This mode takes every two characters and flips their positions. It is a simple form of obfuscation that makes text unreadable at a glance but easy to decode if you know the pattern.

            Input:  "Hello World"
            Output: "eHll oWlrd"
        

2. Scramble Words (Typoglycemia)

This is the most popular feature. It keeps the first and last letter of every word in their correct positions but shuffles all the letters in the middle randomly.

This tests the theory that humans don't read every letter, but rather the word as a whole. You can use this to send "messy" messages that are surprisingly readable.

3. Find & Replace Character

This allows for targeted swapping. You can tell the tool to find every instance of the letter "a" and replace it with "@", or swap "e" with "3". This is perfect for generating "Leetspeak" passwords or sanitizing text.

4. Invert Case

Did you accidentally leave Caps Lock on? This mode flips every letter: uppercase becomes lowercase, and lowercase becomes uppercase.

            Input:  "cAPS lOCK iS oN"
            Output: "Caps Lock Is On"
        

Real-World Use Cases

Obfuscating Data

If you post your email address publicly, bots will scrape it. By using the "Find & Replace" mode to swap . with [dot] and @ with [at] , you make it readable for humans but broken for bots.

Creating Puzzles and Games

Teachers and game masters use the "Adjacent Swap" or "Scramble" modes to create clues for escape rooms or scavenger hunts. Players have to "descramble" the text to reveal the hidden message.

Password Generation

Weak passwords are a security risk. Using this tool to swap letters for symbols (like replacing 's' with '$' or 'o' with '0') is a quick way to strengthen a memorable phrase into a secure password.

Frequently Asked Questions

Is there a text limit?

No. Since the tool runs in your browser, you can paste entire essays or book chapters, and it will process them instantly.

Can I un-scramble text?

If you used "Adjacent Swap" or "Invert Case," running the tool a second time on the result will revert it back to the original. However, the "Scramble" mode is random, so it cannot be automatically reversed.

Is my data safe?

Yes. This tool is 100% client-side. Your text is processed by JavaScript on your device and never sent to a server.