A password manager is a software tool that helps you store and manage your passwords securely. The idea behind a password manager is to create a central repository for all your login credentials, such as usernames and passwords, so that you don't have to remember all of them.
With a password manager, you only need to remember one master password, which is used to access the password manager. The password manager will then fill in your login information for you when you visit a website, so you don't have to remember all your passwords.
Password managers typically use encryption to protect your passwords, so that even if the password manager's database is compromised, your passwords will still be safe. Some password managers also include additional security features, such as two-factor authentication or biometric authentication, to further enhance the security of your passwords.
In summary, a password manager is a convenient and secure tool that can help you manage your online passwords, improve your security and privacy, and make it easier and more convenient to use your online accounts.