Free online line shuffler - Fisher-Yates algorithm, client-side processing
Fisher-Yates is an unbiased random permutation algorithm that guarantees equal probability for every possible arrangement. Starting from the last element, it randomly selects a position to swap with, then repeats for each preceding element. This is the fairest shuffling method.
Common uses: random group assignment (students/teams), lottery drawing, question order randomization, A/B test splitting, random display lists, eliminating order bias, game card shuffling, etc. Any scenario requiring elimination of order influence.
No. Each click of "Shuffle" produces a completely different random arrangement. The algorithm uses JavaScript's Math.random() to ensure results are different and unpredictable each time.
Yes. Shuffle Lines is fully responsive and works on phones, tablets, and desktops. The interface adapts automatically to your screen size.
Yes, Shuffle Lines is completely free to use. No registration or login required โ all features are available immediately.
Absolutely. All processing happens locally in your browser. No data is sent to any server, so there's zero risk of data leaks. Your information stays completely under your control.
No. Shuffle Lines uses client-side processing โ everything runs in your browser. Your data never leaves your device, and the tool works even without an internet connection.