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 →Duplicate Content Is Quietly Killing Your Rankings — Here's the Fix
Duplicate content splits rankings and wastes crawl budget. Learn how to find duplicate pages, diagnose the cause, and fix them with proven technical SEO methods.
Crawl Budget Explained: Why Google Might Be Ignoring Your Pages
What is a crawl budget and how to optimise it? Learn how Googlebot allocates crawling resources and the exact steps to fix wasted crawl activity.
Is Your Site Actually Mobile Friendly? Here's How to Tell
Learn how to check if your site is mobile friendly using real technical checks, DevTools testing, and free tools — not just eyeballing it on your phone.