What people actually use this for
- Picking a raffle or giveaway winner from a range of ticket numbers
- Settling "who goes first" in a game night without an argument
- Generating sample data for a classroom exercise or spreadsheet test
- Rolling a quick random number when you just don't want to decide something yourself
This uses your browser's standard randomization — good enough for all of the above, but not built for anything security-sensitive like generating passwords or cryptographic keys.
Asked for more unique numbers than the range has?
You'll get back as many as actually fit — asking for 10 unique numbers between 1 and 5 will just return those 5.