WebToolsHUBHow to use the random tools
- Pick the tool you need: dice, a random number range, a picker for your own list, or UUID generation.
- Set the parameters — range, quantity or list items.
- Generate and read the results; every draw is independent.
- Copy the results with one click.
Frequently Asked Questions
Are the random numbers reliable?
All values use the browser's cryptographically secure random number generator (crypto.getRandomValues) — uniformly distributed and unpredictable.
Which tools are included?
Dice (4/6/10/20/100-sided), random numbers, random name picking, and UUID v4 batch generation.
Can the same item be picked twice?
Name picking is without replacement, so the same item is never picked twice.
Is data sent to a server?
No. All random values are generated locally in your browser.
How random are the results?
They come from your browser cryptographic randomness, not a simple seed loop — suitable for drawings, giveaways and any fair-pick scenario.
Can I draw from my own list of names or items?
Yes. Paste your list into the picker, choose how many to draw, and it selects without repeats if you ask it to.
What is a UUID and when do I need one?
A UUID is a 128-bit identifier that is practically unique without any central registry. Use them for test data, database keys or anywhere you need an ID that cannot collide.
Technical References
- MDN Web Docs — Crypto.getRandomValues(): https://developer.mozilla.org/en-US/docs/Web/API/Crypto/getRandomValues