🕵️ Security

MIME Sniffing Explainer

Analyze how browsers (Chrome/Firefox/Safari) interpret an ambiguous Content-Type and the risk of MIME sniffing in file uploads.

Cenário de upload/serve

Content-Type retornado pelo servidor Nome do arquivo Primeiros bytes/conteúdo (texto, hex ou snippet)

Header X-Content-Type-Options: nosniff presente Header Content-Disposition: attachment presente

Generate strong, random passwords with custom length, uppercase letters, numbers and symbols. Generated in the browser — no data leaves your device.

Apply classic ciphers (Caesar, ROT13, Atbash) or Base64. Useful for puzzles, CTFs and testing — do not use for real security.

Check the strength of a password with entropy calculation, common-password check and improvement tips. Runs in your browser — no data is sent.