Developer Tools
Find clear answers to common questions about Security Headers Analyzer, including usage, output, and common issues.
Use this Security Headers Analyzer to fetch a URL and review common HTTP security headers such as Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy. It is useful for launch checks, security reviews, technical audits, and quick validation of visible browser-facing security controls.
Security Headers Analyzer is built for development, debugging, formatting, and quick technical checks directly in the browser.
It checks common browser-facing security headers such as CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy.
No. It focuses only on visible HTTP security headers.
Yes. It is useful for basic pre-launch and audit-style reviews.
This tool is narrower and focused specifically on security-related response headers.
They may not be configured, may be stripped by infrastructure, or may differ by route.
Security Headers Analyzer is built for development, debugging, formatting, and quick technical checks directly in the browser.
Start by checking the input format, removing accidental spaces or unsupported characters, and comparing your input against the example pattern on the page.
Fix: Some sites block automated requests or respond differently depending on origin and infrastructure.
Fix: This tool checks visible HTTP response headers only, not deeper security posture.
Fix: Use a full URL like https://example.com for clearer results.
If you want to see realistic input and output patterns, open the examples page. If you want step-by-step usage guidance, open the guide page.
Open the main Security Headers Analyzer page to test your own input and generate a live result.