About Pet Password Checker
Last updated: March 2026
Who Built This
My name is David Glen. I built Pet Password Checker after noticing that almost everyone I know, myself included, has used a pet's name in a password at some point.
When I looked into it, the data was clear: names like Bella, Max, and Luna are among the first things attackers test. Millions of people think their pet's name is unique to them. It is not. And there was no tool specifically designed to show people why their pet name password is weak and how to fix it without giving up the name entirely.
That is why this site exists. It is an independent project with no corporate sponsors, no affiliations with password managers or cybersecurity companies, and no data collection.
How the Tool Works
Transparency matters when you are asking someone to type a password into a website. Here is exactly what happens when you use the checker:
Password strength analysis: Your password is evaluated entirely in your browser using JavaScript. The code checks length, character variety, and whether the password follows common patterns that attackers test first (like name + 123, or name + year). Nothing is sent to any server.
Breach check: The tool checks whether your exact password has appeared in known data breaches using the Have I Been Pwned Pwned Passwords API. This uses a privacy-preserving method called k-anonymity: only the first 5 characters of your password's SHA-1 hash are sent to the API. Your full password, or even the full hash, never leaves your device.
Crack time estimate: The tool estimates how long it would take to crack your password based on its length, character set, and pattern predictability. This is an approximation, not a guarantee. Real-world cracking speed depends on the attacker's hardware and the hashing algorithm used by the service storing your password.
What This Tool Does Not Do
This tool does not guarantee that a password is safe. It shows how predictable your password is based on patterns commonly exploited in real attacks.
Real security also depends on factors outside the password itself: how the service you are signing up for stores your credentials, whether you reuse the same password across multiple accounts, and whether you have two-factor authentication enabled.
If you want to go beyond password checking, consider using a password manager. They generate and store unique, random passwords for every account so you do not have to remember them yourself.
What You Can Learn Here
Beyond the checker tool, this site includes educational guides on password security written for people who are not security experts:
Contact
If you have questions, feedback, or suggestions, you can reach me at info@petpasswordchecker.com.
Want to see how strong your password is? Test it now. Nothing is stored or sent.