Username generator

One you will recognise but others cannot tie to you: no full name, no birthday and not the handle you already use elsewhere. Keep it within the site’s length limit and stick to letters, numbers and one separator, which almost every site accepts.

If you use one username everywhere, anyone can search it and link your accounts together, and a leak from one site tells attackers what to try on the others. A different username for each site keeps your accounts apart. It works best with a different password for each site too.

Each name is drawn with your browser’s cryptographic random number generator, the same kind used for passwords, and a batch of ten never repeats a name. The page cannot check whether a name is already taken on a site; the site tells you when you sign up.

Choose “From a word” and type your name or a word you like. You get variations with a friendly word before or after it, a few numbers, or a letter or two swapped for look-alike digits, like S4m for Sam. Accents are dropped so every site accepts the result.

Gmail delivers mail sent to yourname+anything@gmail.com to yourname@gmail.com, as Google’s help page explains, so each site can get its own address that you can filter and trace. Other email providers differ, some sites refuse a plus sign in an address, and anyone who sees the alias can remove the tag, so it helps with sorting, not anonymity.

X allows up to 15 characters: letters, numbers and underscores. Discord allows 2 to 32 characters: lowercase letters, numbers, underscores and periods, never two periods in a row. Pick either under “Fit to” and every name follows that site’s rules, taken from its help center.

No. Names are made in your browser and are never sent to Trezio or anyone else. The page does not save the names or anything you type. Only your settings, like length and separator, are kept in this browser’s local storage so they are there next time.

This tool makes usernames and forgets them. Trezio is where a login can live afterwards: the browser extension and the Android app save it with a screenshot of the sign-in page, encrypted on your device with a master password that never leaves it. There’s a free plan.