Line Shuffler

What is a Line Shuffler?

Randomly shuffle the order of lines in a list. Supports reproducible seeded random shuffling using a custom seed key.

Why Use This Tool?

Contests & Giveaways: Randomize participant entries fairly for random prize draws.
Study & Quiz Flashcards: Shuffle question/answer lists to avoid memorizing order sequence.
Data Randomization: Shuffle dataset rows before splitting into training/testing sets.

How to Use

Paste your list of lines.
Optionally enter a Seed key for reproducible shuffling.
Click Shuffle and copy the randomized list.

Real Working Example

Input Text:

Item 1
Item 2
Item 3
Item 4

Output Result:

Item 3
Item 1
Item 4
Item 2

Important Technical Details & Features

Fisher-Yates Shuffle Algorithm: Uses unbiased Fisher-Yates (Knuth) shuffle algorithm for uniform randomness.
Seeded PRNG Support: Supports custom seeds using Mulberry32 PRNG for reproducible shuffle results.
100% Client-Side: Fast processing in local browser memory.

Related Text & Developer Utilities

Sort Lines: Sort lines alphabetically or numerically.
Random Number Generator: Generate random numbers.
Remove Duplicate Lines: Remove duplicate list entries.

Frequently Asked Questions

Is the shuffle algorithm fair?

Yes, it uses the Fisher-Yates algorithm, which guarantees every permutation has equal probability.

What is a seeded shuffle?

A seed key produces the exact same random order every time you run it with that seed.

Is there a limit on list size?

Processes large lists instantly in browser memory.

Is it free?

Yes, 100% free.

What is the main function of Line Shuffler?

Randomly shuffle lines of text or lists with reproducible PRNG seed options for fair random ordering. This tool processes line shuffler data 100% locally inside your web browser.