CodesBeautify

Random Alphanumeric Generator

Produce twelve character alphanumeric strings that mix upper case letters, lower case letters and digits, in any quantity you need.

Alphanumeric strings10 generated
  1. Ch4x703Xp185
  2. Ou98ropG3661
  3. DplgcysCqx90
  4. C3rdo02Vcb01
  5. Lsn055lBv478
  6. E0z6ks1A7z75
  7. HgsojytFsk60
  8. Tnp8g05Lz141
  9. Z2dtfr7U5u76
  10. MotqbgtAxc95
Runs locally in your browser

About the Random Alphanumeric Generator

Each string this tool produces is exactly twelve characters long and follows a fixed shape: an upper case letter, six lower case letters or digits, another upper case letter, two more mixed characters and a two digit tail. That shape keeps every value visually distinct while guaranteeing at least two capitals and two digits, which satisfies most order reference and voucher code rules without any extra checking.

The characters come from crypto.getRandomValues rather than a seeded pseudo random sequence, so two people opening this page at the same second get different lists. Nothing is transmitted anywhere: the strings appear, live in the output pane, and vanish when you close the tab.

Turn on no repeats when the codes act as identifiers, for example test order numbers, coupon batches, sample tracking labels or fixture data for a database seed script. The uniqueness check compares whole strings, so a batch of 500 is guaranteed collision free before you paste it anywhere. If you need a specific pattern instead of this fixed shape, the Regex Data Generator builds strings from a regular expression, and the Password Generator adds symbols and a strength readout for anything that guards an account.

How to use

  1. Decide how many strings you need, up to 500 in one pass.
  2. Keep No repeats on when the strings will be used as identifiers.
  3. Press Generate, then use Copy for a paste or Download for a text file you can import.

Common questions

How long is each string?
Twelve characters, always in the same pattern of letters and digits so the output stays easy to read aloud.
Are these safe to use as passwords?
They are fine as throwaway references, but a real account password should come from the Password Generator with symbols enabled.
Do the strings contain confusing characters?
They can include o, 0, l and 1, so pick a font that distinguishes them if the code will be typed by hand.
Is anything sent to a server?
No. The page generates every character locally with the browser cryptographic random source.