Password strength checker

  1. Input
  2. Result

Use a test password. The checker does not send it to an API or save it in storage. Common and English dictionaries are used; other-language words may be missed. This is not a leaked-password lookup or a security guarantee.

Check password strength online

The checker estimates entropy and points out common weak patterns without sending the password to the server.

Use it to compare password variants, but avoid pasting real production credentials into any online page.

Quick start

Estimate password guessability with local pattern detection.

  1. Enter a test password
  2. Run the local estimation engine
  3. Review patterns and clear the password or export a secret-free report
✓ The tool runs directly in the browser and is ready for quick checks without installing software.
✓ Input can be cleared and recalculated immediately, which is useful for repeated small tasks.
✓ Use fullscreen mode when you need more space for long text, structured data or large result blocks.
✓ Copy buttons are available on generated output so results can be reused in code, documents or support chats.
✓ Most operations are deterministic: the same input and options produce the same output.
✓ For sensitive content, prefer local browser tools and review the result before sharing it further.

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Reviews reflect users’ experiences, not a guarantee of results or a description of the service limits. Use the rating buttons above to leave a review.

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