Random Password Generator

Generate secure random password

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

Autor
liquorburn
Denně instalací
0
Celkem instalací
1
Hodnocení
0 0 0
Verze
20260207
Vytvořeno
07. 02. 2026
Aktualizováno
07. 02. 2026
Size
2,5 KB
Licence
MIT
Spustit na
všech stránkách

Random Password Generator

This userscript adds a Menu Entry in your userscript manager. Click that entry to generate a cryptographically secure random password. You can find it in your clipboard, ready to paste where you need to use it.

Rejection sampling approach

Rejection sampling is a technique that generates uniformly distributed random values by discarding any numbers that would introduce statistical bias when mapping a large random range into a smaller one. By accepting only values within a perfectly divisible interval and using a cryptographically secure RNG such as crypto.getRandomValues, it preserves true uniformity and unpredictability, which are essential properties for cryptographic-grade password generation.

Screenshot

Tampermonkey menu

Please note

  • The default length of the password is 19 characters, you can adjust it by modifying the LEN constant in source code.
  • This userscript was tested with Tampermonkey on Brave and Greasemonkey on Firefox.