Check password strength
Find out how secure your password is, without it ever leaving your browser.
How to check password strength online for free
Enter your password
Enter the password you want to check in the text field.
Check the result instantly
The strength bar and recommendations update automatically as you type.
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Why check your password strength on PDFDocks?
Many passwords seem secure but aren't. PDFDocks analyzes your password directly in your browser, never sending it to any server — an important safeguard when dealing with a real password.
Is my password sent to any server?
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No, never. The analysis happens completely in your browser — your password never leaves your device at any time.
What makes a password strong?
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Length is the most important factor, followed by combining uppercase letters, lowercase letters, numbers and symbols, and avoiding predictable words or patterns.
Should I use the same password for multiple accounts?
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No. Even if it's very strong, reusing the same password means that if one account is compromised, all the others are at risk too.
Security
Encrypt file
Protect any file with a password, using real AES-256 encryption.
Decrypt file
Recover an encrypted file from our tool, using your password.
Password Generator
Generate random and secure passwords with the length and characters you choose.
Hash Calculator
Calculate the SHA-1, SHA-256, SHA-384, and SHA-512 hash of any file.
