Generate random strings of 1–256 characters using the browser’s cryptographically secure random source, up to 100 at once. Choose letters, digits, hexadecimal or a custom character set, then copy without uploading or saving.
Use crypto.getRandomValues and reject sampling. Randomness does not mean ensuring global uniqueness; custom character sets eliminate duplication.
Shortcut key: Ctrl/⌘+Enter. Modifying inputs or options clears old results.
This is just a format indication, not a fixed result; leading zeros and repeated characters are allowed.
No. This tool generates random characters, not registered or issued API tokens. The relevant service must create credentials and manage their permissions and expiry.
No. Randomness is different from uniqueness, short strings or small character sets are more likely to be repeated. When business uniqueness is required, conflicts should still be checked in the business system.
Characters are drawn from the browser’s cryptographically secure random source using rejection sampling to avoid modulo bias. Duplicate characters are removed from the character set first. Generated results are not saved by this site.
Content check:2026-09-08 · About this site and content description