Useful Hacks

Security & Privacy Tools

Utilities for everyday security hygiene — checking password strength, generating hashes and HMACs, building and auditing Content-Security-Policy headers, and scrubbing secrets out of text before you share it. Everything runs locally in your browser.

All security tools

Password Strength Checker

Check a password's strength and estimated crack time.

HMAC Generator

Generate an HMAC signature for a message with a secret key.

CSP Generator

Build a Content-Security-Policy header, including frame-ancestors and a report-only rollout mode.

CSP Analyzer

Parse a CSP header and flag common weaknesses, including missing frame-ancestors and object-src.

Secret Redactor

Scrub API keys, tokens and secrets out of text before sharing it, with custom patterns for your own formats.

SSL Certificate Checker

Check a domain's SSL certificate details and expiry.

Security Headers Checker

Check a live site's security-related HTTP headers, with a letter grade.

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