Randomization Methodology
LetsRandomize tools are designed for everyday randomization: shuffling lists, picking names, splitting teams, rolling dice, practicing memory tests, and making low-risk decisions. This page explains the shared approach behind the tools and the limits users should understand.
Random source
Core randomization tools use the browser Web Crypto API, specifically crypto.getRandomValues(), when it is available. That API draws from the operating system's entropy source and is a strong default for browser-based randomization.
When Web Crypto is unavailable, tools fall back to standard browser pseudorandom behavior. That fallback is acceptable for casual, non-security use, but it should not be treated as certified randomness.
Algorithms used
List shuffling tools use Fisher-Yates-style shuffling instead of sorting by a random comparator. Fisher-Yates avoids the bias caused by common shortcuts like array.sort(() => Math.random() - 0.5).
Picker tools select from the available entries without changing the original list unless the tool explicitly offers a remove-after-pick option. Team and group tools shuffle the roster first, then distribute entries into groups according to the selected team count or team size.
User input and privacy
Names, lists, options, and generated results are processed in the browser for the current session. LetsRandomize does not require accounts and does not provide a server-side database for submitted lists.
Some tools may keep recent results or preferences in browser localStorage so that the tool remains convenient during the same visit. Users can clear this data from the browser. Hosting, security, analytics, and advertising providers may still receive technical request data as described in the privacy policy.
Appropriate use
These tools are appropriate for classrooms, team activities, meeting order, casual giveaways, games, writing prompts, practice tests, and personal decisions. They are not intended for gambling, cryptographic key generation, regulated prize drawings, legal allocation, medical decisions, or any workflow that requires a certified audit trail.
For formal drawings, publish official rules, verify entry eligibility, keep a record of entries, and use the process required by the organizer, platform, or applicable law.
Review and corrections
Tool behavior and explanatory guides are reviewed for accuracy when pages are updated. If you find a bug, unclear wording, or a claim that needs correction, contact [email protected] with the page URL and the details.