Strong Password Generator
Custom rules with real-time strength scoring
🔒 All data is processed in your browser. Nothing is uploaded to any server.
Strength: —
Crack time: —
Quick guide
What can Strong Password Generator help you do?
Free password generator with custom length (4-128), character types, strength scoring, and crack-time estimation.
Best for
Useful for quick file work, text cleanup, calculations, content creation, and website or AI checks.
How to use it
Open the tool, enter or upload what it asks for, then copy or download the result directly.
Privacy and limits
Most tools run in your browser with no sign-in. Very large files or older devices may hit browser memory limits.
Frequently Asked Questions
How long should a password be?
12+ characters with mixed types. 16-char random is essentially uncrackable.
Are generated passwords stored?
No — generated in your browser only.