Security Headers Checker
Enter your website URL to scan for crucial security headers and see how to improve your site's security.
About Security Headers Checker
This tool analyzes your website's HTTP headers to check for crucial security parameters that protect against XSS, clickjacking, and other attacks.
It provides an overall security grade and detailed recommendations on how to configure each header for maximum protection.
How to use
- Enter your full website URL (e.g., https://example.com).
- Click the Check Headers button.
- Review the grade and the list of detected or missing headers.
- Use the recommendations to improve your server configuration.
Tips
- Aim for an A+ grade by configuring all recommended headers.
- Use a strict Content Security Policy (CSP) to defend against XSS.
- Always enable HSTS (Strict-Transport-Security) to enforce HTTPS.
Related guides
Learn the workflow behind this tool and what to check next.
How to validate a domain before launch
A launch workflow for confirming DNS records, domain ownership signals, SSL coverage, and security headers on the public endpoint.
Technical SEO checks before submitting a site
A focused checklist for making sure search engines can discover, crawl, understand, and index important pages.
How to check redirects before an SEO migration
A migration checklist for confirming old URLs redirect cleanly, final pages are indexable, and sitemap and robots.txt signals agree.
Security header checks before publishing
HTTP security headers reduce common browser-side risks. Use the report as a deployment checklist, then verify changes in production.
HTTPS enforcement
Check HSTS only after HTTPS is stable on all subdomains you intend to include.
Framing control
Use frame-ancestors or X-Frame-Options to reduce clickjacking unless embedding is an intentional product requirement.
Content policy
Review CSP findings carefully because strict policies can block scripts, images, analytics, and third-party widgets.
Environment parity
Compare staging and production headers when a proxy, CDN, or application server sets headers in different places.
Privacy and usage
Built for quick checks without an account
Toolinix tools are designed for short developer tasks: paste a safe sample, inspect the result, copy what you need, and move on.
No login required
You can use the tools without creating an account, subscribing to a newsletter, or saving a workspace.
Local when possible
Formatters, generators, encoders, and text utilities generally run in your browser. Network diagnostics may need a server-assisted lookup to check public URLs, domains, or IPs.
Keep secrets out
Do not paste production passwords, private keys, access tokens, customer records, or regulated data into online tools unless your own security policy allows it.
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