Processed client-side in your browser — files never leave your device.
Free, with no signup, account, or usage limits.
Works on any modern browser, including mobile.
About this tool
Password Strength is a free online utility to check password strength and security (related: password, strength, security). Processing runs locally in your browser — your input is not uploaded to ThothBox.
How to use
Open Password Strength and paste or type your input.
Choose any options that affect the output.
Run the tool or watch the live result update.
Copy or download the output.
FAQ
What does Password Strength do?
Check password strength and security.
Is Password Strength private?
Yes for typical use: input is processed in your browser and is not uploaded to ThothBox.
Is Password Strength free?
Yes. It is free to use with no signup required.
How do I use Password Strength?
Open the Password Strength tool, then open Password Strength and paste or type your input.