Type a password to see its strength score and specific tips to make it stronger.
Paste or type your text into the main field.
Stats and results update as you type — no submit button.
Copy or clear when you are done.
This checker scores passwords based on length and the variety of character types used, then gives specific feedback on what to improve. Your password is never sent anywhere — everything is evaluated locally in your browser.
Paste text into Password Strength Checker and read the live result. Nothing is sent to a server for typical use — adjust the input until the output looks right, then copy it.
Start with a short sample to confirm the reading. Large pastes are fine once you trust the output. Use Reset if you want a clean slate.
Whenever possible, Password Strength Checker processes your data locally with JavaScript in this page. That means drafts, secrets, and unfinished work stay on your device by default. Prefer this workflow when you do not want to upload sensitive text, tokens, passwords, or files to a third-party service.
No, the strength check runs entirely in your browser using JavaScript — nothing is transmitted or stored.
No score guarantees perfect security, but following the feedback significantly increases resistance to common cracking methods.
For most FlyUtils tools, no. Processing happens in your browser with JavaScript. If a tool ever needs a server, that will be stated clearly on the page.
Yes. Password Strength Checker is free, with no sign-up and no artificial usage caps for normal personal and work use.
Yes. The page is mobile-first, so you can paste input, tweak options, and copy results from a phone or tablet.