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Security
Unicode Confusables IDN Homograph Checker
Take a domain in IDN/Punycode and detect confusable characters mimicking ASCII (IDN homograph attack). Shows normalized form and risk flags.
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Apply classic ciphers (Caesar, ROT13, Atbash) or Base64. Useful for puzzles, CTFs and testing — do not use for real security.
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Password Strength Checker
Check the strength of a password with entropy calculation, common-password check and improvement tips. Runs in your browser — no data is sent.