Free String Randomizer & Shuffler
Shuffle item lists, select random names or winners, or generate custom random strings and security keys. Runs completely locally in your browser for absolute data privacy.
Input List
Randomized Output
How it works
Our list shuffler uses a local Fisher-Yates shuffle — every permutation is equally likely. Paste your list, choose the item separator (new line, comma, semicolon, or space), and pick Shuffle Entire List or Pick Random Items. For picking, set how many to draw and whether duplicates are allowed.
For key generation, select a character set and length (4–128), set how many keys you need, and optionally add a prefix like sk_live_. Generation uses the browser’s cryptographic API and never leaves your device.
What you get
- Unbiased shuffling — Fisher-Yates
O(n)ensures uniform randomness. - Pick random winners — with or without replacement, ideal for giveaways.
- Custom separators — newlines, commas, semicolons, or spaces, with empty entries removed.
- High-entropy keys — alphanumeric, hex, or letters-only with optional prefixes.
- Private by design — all parsing and randomness runs locally; no uploads.
Frequently Asked Questions
We use the Fisher-Yates shuffle. It walks backward through the array and swaps each element with a randomly selected earlier element, guaranteeing uniform distribution without the bias of sort-based shuffles.
Absolutely. Inputs, names, and outputs are parsed entirely on your device. The page makes no network requests with your data.
Yes. Choose newline (default), comma, semicolon, or space. The tool trims whitespace and filters out empty segments so only real values are randomized.