Free Shuffle Lines that works offline
Randomize a list for exercises, testing, draws or unbiased review order without sending the values anywhere.
What this shuffle lines does
The Fisher–Yates algorithm produces an even shuffle when paired with unbiased random indices. This implementation uses the browser crypto API rather than Math.random for stronger local randomness.
How to use the Shuffle Lines
- Enter or paste a line-based list whose order should be randomized into the tool.
- Adjust the available options so they match the format and result you need.
- Choose Shuffle lines and review the same values in a cryptographically randomized order before using it.
- Copy or download the result, then clear the page if the input was sensitive.
Common uses
- Randomizing quiz questions
- Changing review order for a checklist
- Shuffling test fixtures
- Creating a randomized participant order
Private processing and offline access
This tool does not submit your input to a conversion server. Processing takes place inside the browser using local JavaScript and standard Web APIs. After the PWA has been installed or cached, the page and its core features remain available without an internet connection. Closing or clearing the page removes unsaved input; the tool does not create an account or cloud history.
Tips for accurate results
- A shuffle is not a verifiable public drawing.
- Remove duplicates only when repeated entries should not affect probability.
- Keep a copy of the original order when it matters.
Frequently asked questions
Does this tool upload my data?
No. Shuffle Lines processes its input in the current browser and does not submit it to a conversion API.
What input does the Shuffle Lines accept?
Any multi-line Unicode text is supported. The tool can preserve or remove blank and duplicate lines before shuffling.
Can I use this tool offline?
Yes. Once the Offline Tools PWA has cached the page, the core feature works without an internet connection.