在线免费HTTP头部检查器
分析HTTP响应头并审计服务器安全性。
Paste raw HTTP response headers below. Get them by running curl -I https://example.com in your terminal.
Frequently Asked Questions
Which HTTP security headers are most important?
Essential security headers: Strict-Transport-Security (HSTS), Content-Security-Policy (CSP), X-Frame-Options (clickjacking), X-Content-Type-Options (MIME sniffing), Referrer-Policy, and Permissions-Policy. HSTS and CSP are the most impactful.
What is the Strict-Transport-Security (HSTS) header?
HSTS tells browsers to always use HTTPS for your domain. Recommended: Strict-Transport-Security: max-age=31536000; includeSubDomains; preload. The preload directive submits you to browser HSTS preload lists for maximum protection.
What does Content-Security-Policy (CSP) protect against?
CSP prevents XSS (cross-site scripting) attacks by specifying which sources of scripts, styles, images, and other resources are allowed. A strict CSP is one of the most effective defenses against injection attacks.
What is the X-Content-Type-Options header?
X-Content-Type-Options: nosniff prevents browsers from MIME-sniffing responses away from the declared content-type. Without it, a browser might interpret a text file as executable JavaScript, creating an XSS vector.
How do Cache-Control headers work?
Cache-Control: max-age=31536000 tells browsers to cache the resource for 1 year. no-cache means revalidate with server before using cached copy. no-store means never cache. For static assets with hashed filenames, use long max-age. For HTML, use no-cache.
Is the HTTP头部检查器 free to use?
Yes, the HTTP头部检查器 on Allio Tools is completely free with no sign-up or registration required. It works directly in your browser.
How does the HTTP头部检查器 work?
分析HTTP响应头并审计服务器安全性。 Your input is processed on Cloudflare's edge infrastructure — it is not stored, logged, or shared with any third party.
Do I need to install anything to use the HTTP头部检查器?
No installation needed. The HTTP头部检查器 runs entirely in your web browser on any device — desktop, tablet, or mobile.
Is my data safe when using the HTTP头部检查器?
Yes. Your input is processed on Cloudflare's globally distributed edge network. Data is used only to generate your result and is never stored, logged, or shared with any third party.
Does the HTTP头部检查器 work offline?
No — the HTTP头部检查器 processes your input on Cloudflare's edge servers and requires an internet connection.
How current is the data returned by the HTTP头部检查器?
The HTTP头部检查器 fetches live data in real time each time you run it. Results reflect the current state of the server or domain at the moment of the request.
Why does the HTTP头部检查器 sometimes return different results than other tools?
Results depend on the real-time state of the target server and DNS propagation, which can vary by geographic region and caching TTL. If you see inconsistencies, wait a few minutes and re-test — DNS changes can take up to 48 hours to propagate fully worldwide.
Does the HTTP头部检查器 work on all browsers?
Yes. The HTTP头部检查器 is built with standard browser APIs and works on all modern browsers including Chrome, Firefox, Safari, and Edge — on both desktop and mobile. No plugins, extensions, or third-party software are required.
How do I save or export my results from the HTTP头部检查器?
Select and copy the result text to paste into any document or app. For image tools, a Download button saves the file directly to your device. Your browser's built-in screenshot function also captures results quickly. No account or login is required.