RNDGen added a password generator next to the data generator, built in a few quick iterations by the end of January 2023.
Test accounts need passwords, and so do real ones. RNDGen got a password generator: choose the length and the character sets, and copy the result.
It went through four quick versions in the last days of January 2023.
The password, passphrase and PIN generators were rebuilt in 2026 on the browser’s cryptographic random source. See the password generator.