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Generate random strings with custom settings.
Choose length and character types for your strings.
Click Generate to create random strings.
Click Copy to save the strings to your clipboard.
A random string generator produces strings of random characters to your specification: choose the length and which character sets to include, letters, numbers, and symbols, then generate one string or a batch. It is the go-to for API keys, test data, tokens, coupon codes, and temporary identifiers.
Strings are generated in your browser using your device's randomness source, so nothing is transmitted or stored. Generate as many as you need and copy them in one click.
Match the character set to where the string will live. A URL-safe token sticks to letters and numbers to avoid encoding issues. A coupon code often drops ambiguous characters like O, 0, I, and 1 so people can type it without errors. An API secret uses the widest set including symbols for maximum entropy. Pick the sets that fit the destination, not just the longest one.
A string's strength is its entropy, driven by both length and how many characters each position could be. A 32-character string from a 62-character alphabet has vastly more combinations than an 8-character one, which is why keys and secrets are long. For anything security-sensitive, favor more length rather than exotic symbols that some systems reject.
Generating API keys and secrets, seeding databases with test values, creating unique coupon and referral codes, producing temporary passwords for account setup, and making placeholder identifiers during development. For strictly formatted identifiers, the UUID generator and random alphanumeric generator produce those specific shapes.
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