Numbers, draws, dice and IDs from the browser CSPRNG
Cryptographic randomness, without modulo bias, drawn in the browser
Four panels, one source of randomness. Numbers in a range, with or without repeats. A pasted list, shuffled, drawn from, or split into teams. Dice in standard notation and coin flips with the tally. UUIDs, random bytes and tokens.
It uses crypto.getRandomValues, not Math.random. Math.random is fast, seeded and reconstructable: from a handful of outputs you can work out its state and predict the rest. Nobody minds for a dice game. For a giveaway somebody might contest, or an identifier that is supposed to be unguessable, it is the wrong tool, and mixing the two would mean one part of a generator was quietly weaker than the rest.
The numbers are uniform, which is harder than it sounds. Taking a random value modulo the size of a range favours the low end whenever the range does not divide the source evenly: with one byte and a hundred entries, the first fifty six are half again as likely as the rest. This engine discards the values that would cause that and draws again, so every outcome has exactly the same chance. The shuffle is Fisher-Yates for the same reason.
The tool keeps no history, no saved list and no local storage. A list of entrants is not a setting, so it is discarded when the tab closes.
The most important capabilities, explained in practical terms.
Whole numbers or decimals, any range up to the limits of exact integer arithmetic, up to ten thousand at a time, sorted or in the order they were drawn. No repeats is a checkbox, and asking for more distinct numbers than the range holds is refused rather than approximated.
Paste a list and pick winners without replacement, shuffle the whole thing into a running order, or deal it into teams whose sizes differ by at most one. Duplicate lines can be folded together, and the tool says how many were not drawn.
3d6, d20, 2d10+5. Every die is shown as well as the total, because a roll you cannot see the parts of is just a number to be taken on trust. Coin flips come with the tally, which is what makes a run of nine heads look like arithmetic instead of a bug.
UUID v4 for pure randomness, UUID v7 when the identifier should sort by creation time, random bytes as hex, and tokens over six alphabets including a URL-safe one and one with the characters people misread removed.
Every token setting shows how many bits it is worth, because 24 characters means 144 bits over base64url and 80 over the digits, and no interface otherwise says so. It is the only honest way to compare two settings.
There is no strength meter and no memorability option. A password that arrives through a web page is one a password manager should have made and stored; the token panel is for API keys, voucher codes, test data and identifiers.
A clear path from the official source to your first successful workflow.
Use one of the official links available for your device or browser.
Follow the store instructions or open the web application. No third-party installers.
Review the options, choose your preferences and start with the core workflow.
A transparent look at the core technologies used to build and maintain this product.
Your data stays on your device. Always.
