Is Password Strength Checker free?

Yes, completely free. No signup, no watermark, no limits - ever.

Are my files uploaded to a server?

No. Everything runs in your browser. Your files never leave your device.

No server-side limit. Very large files may be slower depending on your device.

Yes - works on desktop, tablet, and mobile in all modern browsers.

Completely. UtilityZoo cannot see or store anything you process.

Check how strong your password is. Crack time estimate, score out of 100. Password never leaves your browser.

100% FreeNo SignupFiles Stay on Your Device

Your password is never sent anywhere - all analysis happens locally in your browser.

Enter a password above to check its strength

Drag and drop your file into the tool, or click to browse and select from your device.

Configure any options - output format, quality, compression level, or other settings specific to this tool.

Your file is processed instantly in your browser. Click download to save the result - nothing was sent to any server.

Convert between HEX, RGB, and HSL colors

Find the closest Tailwind color for any HEX

Build Tailwind CSS gradients visually

Check WCAG color contrast accessibility

Common questions about Password Strength Checker

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