Password Reuse Checker

Find every site sharing the same password, locally

Reusing the same password — or a minor variation of it — across multiple sites is one of the most common ways accounts get compromised in bulk after a single breach. This tool detects exact and near-duplicate reuse across a pasted list of site + password pairs, shows exactly which sites share credentials, and computes an overall reuse risk score. Because the input is unusually sensitive, it is processed entirely client-side, never saved to localStorage, and the input box clears itself automatically after showing results.

• →Detects exact password reuse across every site you list
• →Catches near-duplicate variations (appended numbers/symbols)
• →Shows exactly which sites share a password or variation
• →Processes everything locally and auto-clears input after results — nothing is saved to localStorage or sent anywhere
• →Watermarked by Cikal Studio Labs · Works on any device, no install required