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Password Strength Checker

Check how strong your password is, with a detailed breakdown of what makes it weak or strong.

Runs entirely in your browser — your files are never uploaded to a server.

This check runs entirely in your browser — nothing you type is ever sent anywhere or stored

How It Works

1. Choose Your File

Drag & drop or select the file you want to work with.

2. Processed in Your Browser

Everything happens locally on your device — your file is never uploaded anywhere.

3. Download Your Result

Get your finished file instantly, ready to save or share.

Frequently Asked Questions

Is my password safe to type here?

Yes — this tool runs entirely in your browser using JavaScript. Your password is never transmitted, saved, or logged anywhere.

What makes a password weak?

Short length, lack of character variety (missing uppercase, numbers, or symbols), common/breached passwords, and predictable patterns like sequences ("1234") or repeated characters ("aaaa").

What password length is recommended?

At least 12 characters — longer passwords are exponentially harder to crack than adding more character types to a short one.

Should I use this to check my real passwords?

The check itself is safe (nothing leaves your browser), but as a general habit, use our Password Generator to create new strong passwords rather than testing existing ones repeatedly.

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