Headers Test Tool – Check HTTP Headers Online
Free online header checker by Web Tools Pro Team · Last updated:
Test and analyze HTTP headers of any website. View status code, content-type, server, cache-control, and more. Free and private.
🎯 What Is Headers Test Tool?
The Headers Test Tool is a free online utility that analyzes HTTP headers of any public website. HTTP headers provide crucial information about how a web server responds to requests – including status codes, content types, caching policies, security settings, and server information. This tool helps developers, SEO professionals, and site owners debug issues, verify security headers, and understand server responses.
Using a reliable CORS proxy, the tool fetches headers from any public URL and presents them in a clean, readable format. Everything runs through a secure proxy – your URLs are not stored or logged. Whether you're troubleshooting a 404 error, checking for proper CORS configuration, or auditing security headers like Strict-Transport-Security, this tool gives you instant insights.
📘 How to Use Headers Test Tool
- Enter a URL – Type or paste the full URL (including https://) of the website you want to test.
- Click "Test Headers" – Press the button to start the header analysis.
- Review results – View the status code, content-type, server, cache-control, and other headers.
- Copy results – Use the "Copy Results" button to export the data for documentation.
✨ Key Features
⚙️ How It Works
The tool uses a combination of browser's Fetch API and a reliable CORS proxy service to retrieve HTTP headers from any public URL. When you enter a URL, the tool sends a request through the proxy, which fetches the target URL and returns the headers. The results are then parsed and displayed in a clean, readable format. This approach allows you to test any public website without running into cross-origin (CORS) limitations.
📊 Headers Test vs. Other Header Checkers
| Criteria | Headers Test | Browser DevTools | Online Header Checkers |
|---|---|---|---|
| Cost | ✅ Free | ✅ Free | ⚠️ Freemium |
| Setup time | ✅ None — open and use | ❌ Requires browser tools | ✅ None |
| Ease of use | ✅ Extremely simple | ⚠️ Technical | ✅ Simple |
| Privacy | ✅ 100% private | ✅ Local | ❌ May store data |
| Best for | Quick header checks | Deep debugging | Occasional checks |
❓ Frequently Asked Questions (FAQ)
💬 What Our Users Say
⭐ Have you used Headers Test Tool?
We'd love to hear your feedback! Share your experience and we'll feature it here.
📩 Send us your review via Contact Us or on social media.
— PLACEHOLDER: Replace with real testimonials
📸 See Headers Test Tool in Action
✅ Headers Test Tool – Professional banner design
🔗 More Free Tools You Might Like
🚀 Start Using Headers Test Tool Free Today
Whether you're a developer debugging API responses, an SEO professional checking redirects, or a site owner verifying security headers, the Headers Test Tool gives you instant, clear, and accurate header information — free, private, and with no software to install. Bookmark this page so it's easy to find next time you need it.