Password Strength Checker

A free online text processing tool that test how strong your password is with real-time analysis. Transform, analyze, and manipulate text instantly in your browser. Most people overestimate how strong their passwords are — an 8-character mix of letters and numbers falls to a GPU cluster in minutes. Auditing credential strength against entropy estimates, character-set diversity, and known breach dictionaries gives users honest feedback before they rely on a weak password for sensitive accounts, something no browser's built-in strength bar communicates with real depth. The analyzer evaluates entropy in bits, checks against a database of common passwords, detects sequential and repeated patterns, and rates the result on a 0–100 scale with actionable suggestions for improvement. Type or paste a password and the tool scores its strength in real time — analyzing length, character variety, entropy, and common-pattern vulnerability. Suggestions appear as you type. All analysis happens locally in your browser. Your password is never transmitted, logged, or stored — safe for testing real credentials.