Security Headers Checker — HSTS, CSP & X-Frame Audit
Audit enterprise security headers including Strict-Transport-Security (HSTS), Content-Security-Policy, and X-Frame-Options.
200 OK
Allowed
Valid
TLS 1.3
What is the Security Headers Checker?
The Security Headers Checker by CompleteSEOTools is an essential webmaster utility engineered to diagnose crawlability, indexation rules, HTTP response headers, and server configurations. It helps SEO professionals and developers eliminate crawl traps, optimize crawl budgets, and maintain flawless technical health for search engines like Google and Bing.
How to Use the Security Headers Checker (Step-by-Step)
Configure Parameters
Enter your target URLs, language codes, or server redirect patterns.
Execute Generator
Process valid XML schemas, Apache rewrite rules, or diagnostic calculations in real time.
Deploy to Server
Download the generated file or copy code directly into your server configuration.
Google Technical Crawling & Indexation Guidelines
A technically sound architecture ensures that search bots discover your high-priority content without hitting 404 dead ends, infinite redirect loops, or bloated render-blocking scripts. Implementing valid XML sitemaps, clean canonical tags, and fast server responses guarantees maximum indexation coverage.
Frequently Asked Questions (FAQs)
HSTS instructs browsers to always connect via HTTPS, preventing downgrade attacks and speeding up redirect latency.