Purpose
Generate passwords with Web Crypto and estimate theoretical entropy.
How it works
Characters are selected with cryptographically secure randomness; entropy is an estimate based on alphabet and length, not a guarantee against every attack model.
Input
Enter text, numbers, a file, or a query target as required. Start with the page example to confirm the format, then replace it with your data.
Interpreting output
Confirm output format, units, and status, then compare with the input and target environment; successful formatting does not prove validity.
Limitations and privacy
This tool processes input locally in the browser and does not send it to the server.