🍪 Security

Double Submit Cookie CSRF Builder

Generate snippets for the Double Submit Cookie CSRF protection pattern with HttpOnly+SameSite cookies and synchronized form and fetch tokens.

Nome do cookie Nome do campo / header SameSite Tamanho do token (bytes)

Related Tools

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.