About this tool
Password strength checker
Check password length, character classes, common weak passwords and repeated patterns.
Enter content or choose a local file on the left, adjust the available settings, and run the tool. Results or previews appear on the right. Use the copy or download actions provided after processing.
Analyzed locally only; the estimate does not mean the password has never leaked. Actual strength also depends on randomness and reuse.
Frequently asked questions
What does this tool do?
Check password length, character classes, common weak passwords and repeated patterns.
How do I use this tool?
Enter content or choose a local file on the left, adjust the available settings, and run the tool. Results or previews appear on the right. Use the copy or download actions provided after processing.
Which settings can I change?
There are no extra settings. Supply data using the input area shown on the page.
What should I check before using it?
Analyzed locally only; the estimate does not mean the password has never leaked. Actual strength also depends on randomness and reuse.
Where is my input sent?
Input is processed in the current browser and is not automatically uploaded by this tool. Copying requires browser permission; select and copy the result manually if needed.