Security Headers Inspector – Check HTTP Headers for Protection
HTTP security headers help protect users by enforcing secure communication rules within the browser. Headers like Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, and Referrer-Policy reduce attack surface areas — preventing clickjacking, MIME sniffing, and data leakage.
This tool inspects a website’s HTTP headers using JavaScript’s fetch() and HEAD requests. It quickly checks for the presence of major security headers and highlights missing or weak configurations. Although limited by browser permissions, it gives a fast, client-side view ideal for auditing public-facing sites without server calls or browser extensions.
🧱 Security Headers Inspector
Check Essential HTTP Headers
Enter a domain below to check for commonly used HTTP security headers. The tool scans:
- Content-Security-Policy (CSP)
- Strict-Transport-Security (HSTS)
- X-Frame-Options
- X-Content-Type-Options
- Referrer-Policy
- Permissions-Policy
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