What does this password QR code contain?
With no username, the code contains exactly the password you entered. With a username, it contains two labeled lines: one for the username and one for the password. This is portable plain text, not a vendor-specific login or autofill command.
Is a password QR code secure?
A QR code is a visual way to carry text; it is not encryption. Treat the image like a visible copy of the credential. Do not post it publicly, leave it in a shared photo library, send it through an untrusted channel, or reuse the encoded password for unrelated accounts.
When is a password QR code useful?
It can reduce typing errors when moving a long random password between devices you control. Scan it in a trusted QR reader, copy the text into the intended app, verify the destination, and remove the image afterward. For a wireless network, use the Wi-Fi QR code generator instead; it creates the standard Wi-Fi connection payload phones recognize.
How is this different from a password manager?
This tool creates a temporary transfer artifact and does not store, sync, rotate, or autofill credentials. A reputable password manager is the better long-term home for unique account passwords. If you need a new credential, the generate button uses browser cryptography to create one locally.