Shuffle Letters

This text randomization tool rearranges the individual letters within words or across entire text blocks using the Fisher-Yates shuffle algorithm, a mathematically proven method for generating unbiased permutations. The tool offers multiple shuffle modes: shuffle letters within each word independently while preserving word boundaries, shuffle all letters across the entire input as a single pool, or shuffle only consonants or vowels while keeping the other set in place.

The shuffling engine leverages the browser's cryptographic random number generator via the Web Crypto API to ensure each permutation is genuinely unpredictable, unlike weaker Math.random-based approaches. The tool processes Unicode text correctly, handling accented characters, ligatures, and multi-byte characters as individual units rather than splitting them into component bytes.

Puzzle creators designing word scramble games, educators building vocabulary exercises, linguists studying letter frequency distributions, and developers testing text rendering engines all find practical applications for this tool. The entire shuffle computation runs in your browser's JavaScript engine with no text transmitted externally, making it safe for scrambling sensitive or proprietary text content.