Random Text & String Generator

Random Text and String Generator makes throwaway values: a random alphanumeric or hexadecimal string, or a block of filler words, sentences or paragraphs.

The two string modes take their characters from crypto.getRandomValues, the cryptographic random source in the browser — alphanumeric from the 62 upper-case, lower-case and digit characters, hex from 0 to f — and the count you enter is the number of characters produced. Those random values are mapped onto the character set with a remainder, which leaves a very slight bias, so the strings are sound as test identifiers but are not a stand-in for a key generator. The word, sentence and paragraph modes are different machinery altogether: they draw on the same thirty-word Latin vocabulary with ordinary pseudorandom picking, not the cryptographic source. Counts run from 1 to 5,000, the character sets are fixed with no punctuation or symbols available, and the result downloads as plain text.

Generation happens entirely in the page, and the values are never transmitted or logged, so a string produced here has been seen only by your own browser.

Seeding a test database with unique identifiers, producing a hex value for a fixture or a mock token, filling a required field during a QA pass, and generating placeholder sentences for a staging environment.

Also known as: generate random string · mock data generator · random characters · test data creator