SS64 Password Generator

‍12345 ‍67890 ‍12345 67890 12 15 char only

Using the same password for multiple email, shopping and social networking websites is risky, it means that a security breach at any one website will compromise all your accounts, possibly even leading to identity theft.

So, the idea is that you memorise just one, reasonably long (at least 10 characters), secure main password and use that to generate a set of non-dictionary passwords. Copy and paste the new password(s) into the website and set your web browser to remember them.

All the websites get different passwords, but you only have to remember one!

Using a different PC? you can re-generate the same set of passwords at any time by returning to this page and entering the same main password.

• For any website that's not on the list, just type the name into the 'Custom' box (the last one in the list) and press Generate.
• For websites that ask for "letter 3 and letter 7 from your password" the password is counted out with the ruler. Click on any password to make this appear.
• Using UPPER or lower case will produce different passwords, when using this for the first time it’s a good idea to use the 'Show Password' tickbox to check for any typos.
• Most websites will send a password reset via email, so set the password for that email account to something completely different, just in case you ever forget the main password!
• The mobile version can be added to your home screen on iPhone or Android, and will work even without an internet connection.
• To navigate this page using the keyboard, use the keys: TAB, RETURN and Ctrl-C.
• The add symbol option will append '4!' to the password to guarantee that it includes a number + symbol for websites which mandate that. Similarly, the 15-character option is for websites that don’t yet support longer passwords.

The security of the generated passwords is only as good as the complexity of your main password, so choose that carefully. Because this generator uses a one-way SHA-256 hash, knowing one password does not allow working backwards to discover the main password or any of the others.

This password generator works using JavaScript, entirely within the page, no data is ever passed back to my server. Notwithstanding this, it is a very good idea to save your own copy of this page. Zip file here. Keeping your own copy ensures that the password generator will still be available to you even if this website goes off-line. You can also edit the default list of websites, View-Source to see how the JavaScript works, copy it to a USB stick, email it to yourself, even upload it to your own website (it’s open source). There are no dependent files, just save as a single HTML file.

Command-line version
Password security - a comparison of Password Generators
Are the SS64.com password generators a good approach? - StackExchange

Credits: JavaScript implementation of the Secure Hash Algorithm, (SHA-256, ©Paul Johnston, distributed under the BSD License.)
Inspired by Nic Wolff’s password generator. Mobile version by Jay van hutten.

Simon Sheppard, Aug 2026
SS64.com/pass/