Zoven

Password Strength

Check password strength and security score

What is the Password Strength?

The password strength works like this: it scores password strength on length, character variety and pattern rules, and checks whether the exact password appears in public breach corpora (Pwned Passwords k-anonymity API). Everything happens on your device - the input never leaves your tab unless the tool clearly states it performs a server-side lookup.

How to use the Password Strength

1. Enter only the minimum information required.
2. Run the check.
3. Read warnings carefully rather than skimming.
4. Clear sensitive input from the page when done.

Features

• Lookups query public databases only
• Sensitive input is processed locally where possible
• Clear limits stated for every check

Common mistakes to avoid

• Pasting live secrets into any online page
• Reusing generated credentials across accounts

Examples

Input	Result
"Summer2024!"	Pattern rules: looks like season+year+symbol - flagged weak despite variety

Best used for

• Getting a reliable answer for password strength without installing an app
• One-off tasks done in under a minute from any device
• Checking results before committing them to something important
• Working on a phone where desktop software is unavailable

Privacy

Only the identifier you explicitly enter is sent for public-database lookup. Browser-side checks never transmit anything.

Frequently asked questions

How does the breach check keep my password private?

It sends only the first five characters of the password's SHA-1 hash and matches the suffix locally - the full password never leaves the tab.

Why is a long password "strong" without symbols?

Length dominates: a 20-letter lowercase phrase has more entropy than an 8-character symbol soup.

What does the score actually measure?

Length first, then character variety and pattern rules (repeats, sequences, common words) - the three properties that make guessing harder, weighted the way real cracking software weighs them.

What does the breach check reveal about me?

Only whether the exact password you typed has appeared in a public data breach - the checking technique never sends the password itself, only a short partial hash that cannot be reversed.

More like this

Zoven offers 200+ free browser tools. Browse by category - Calculators, Converters, Generators, Developer Tools and Media Tools - or read workflow guides on the Zoven blog.