Unbiased Rejection-Sampled Randomness
Standard JavaScript sorting tricks introduce statistical bias. Pinatool uses the Fisher–Yates algorithm backed by Web Crypto API rejection sampling for fair, uniform distribution.
Unbiased Fisher–Yates Shuffling
List Randomizer
Shuffle a list into random order or select a random subset of entries. Useful for organizing activities, mixing teams, and making everyday random selections.
Input List
12 items (one per line)
Randomized Result
12 selected of 12 available items
Randomization runs in your browser using the Web Crypto API. Your list is not uploaded to Pinatool's servers.
How to Randomize or Draw Items from a List
1
Paste Your List
Enter your names, numbers, words, or tasks into the input editor with one item per line.
2
Configure Shuffling
Choose whether to shuffle the complete list or draw a random subset. Optionally trim spaces, remove duplicates, or number the output.
3
Randomize & Export
Click Randomize to generate an unbiased result. Reroll whenever desired, copy directly to your clipboard, or download as a text file.
List Randomizer Features
Subset Selection & Numbering
Need to pick 3 winners from 50 entries or choose a presenter order? Switch to subset mode, pick your count, and automatically format with clean rank numbers.
Local Browser Processing
Your input is processed directly in your browser and is not uploaded to Pinatool's servers.
Frequently Asked Questions
How does the list randomizer achieve unbiased shuffling?
The tool implements the classic Fisher–Yates (Knuth) shuffle algorithm combined with rejection sampling over the browser’s cryptographically secure Web Crypto API (`crypto.getRandomValues`). Unlike naive `Math.random() - 0.5` sorting which exhibits strong directional bias, every permutation of items has an equal mathematical probability of occurring.
Can I select a random subset of items instead of the whole list?
Yes. Toggle to "Pick Random Subset" at the top of the tool and enter how many items you want to pick. The tool draws that exact number of unique items without replacement.
Can I remove duplicate entries before shuffling?
Yes. Check the "Remove Duplicates" option. You can also toggle "Case Sensitive" to differentiate between capitalized and lowercase entries.
Can I add numbers to the shuffled output?
Yes. Enable the "Add Numbering" checkbox to prefix each randomized line with its rank (e.g., "1. Alice", "2. Bob").
Is my list data transmitted over the internet?
No. Your input is processed directly in your browser and is not uploaded to Pinatool’s servers.
Can this tool be used for regulated lotteries or legal drawings?
No. While the algorithm uses rejection-sampled Web Crypto API randomness for unbiased results, this utility is intended for casual drawings, giveaways, classroom activities, team standup orders, and task assignment. It is not certified for state-regulated gambling, legal contracts, or mission-critical cryptographic key generation.
Related Text & List Tools
Sort List
Sort lines alphabetically, numerically, by length, or natural order with multilingual collation.
Filter Lines
Filter lines containing or matching text, prefixes, suffixes, or regex with include/exclude views.
Remove Duplicate Lines
Remove repeated rows with case options and keep first or last occurrence intact.