PDF Password Strength Checker
Most PDF passwords can be cracked in seconds. Is yours one of them? (We do not store or send your password anywhere).
WEAK
Instantly
Time to crack by a modern GPU
Why "Password123" is Suicide for Your Data
PDF encryption is only as strong as the password protecting it. Modern GPUs can guess billions of passwords per second. If your password is 8 characters or less, it is effectively public.
What Makes a Strong Password?
- Length is King: A 15-character password of all lowercase letters is stronger than an 8-character password with symbols.
- Entropy: This measures the randomness. "CorrectHorseBatteryStaple" is easy for humans to remember but hard for computers to guess (high entropy).
Common Questions
Is this tool safe?
Yes. The calculation happens entirely in your browser using JavaScript. Nothing is sent to our servers.