Free Online Security,
SEO & Privacy Tools
HTTP headers, SSL checkers, meta tag analyzers, link scanners and more — no signup, always free.
Tools
4 toolsHTTP Header Checker
Analyze HTTP response headers for any URL. Check security headers, caching policies, and server configuration.
Email Header Analyzer
Parse raw email headers to trace message routing, check SPF/DKIM/DMARC, and detect delays.
SSL Certificate Checker
Check any domain's SSL/TLS certificate. See issuer, expiry date, protocol version, and chain details.
Link Safety Scanner
Check if a URL is safe before clicking. Scans against threat databases for phishing and malware.
From the Blog
View all →Cookie Policies Explained: When Your Site Actually Needs One
What is a cookie policy and do you need one? Learn when it's legally required, what to include, and how to audit your site's cookies properly.
What Your Website's Privacy Policy Actually Needs Under GDPR
Breakdown of GDPR privacy policy requirements for websites — exact clauses, lawful bases, data subject rights, and what most policies get wrong.
What Makes a Password Actually Strong (and How to Build One)
Learn how to generate a strong password using entropy math, passphrases, and password managers — with real examples you can use today.