HTTP Header Checker

HTTP Header Checker is a free online tool that check HTTP response headers for any URL. View status codes, content types, security headers, caching policies, and server information. Analyze and process URLs directly in your browser with instant results.

What is HTTP Header Checker | Rune

HTTP Header Checker fetches and displays all HTTP response headers for any URL. See the full server response including status code, content type, caching directives, CORS headers, and server information.

Includes a security header analysis that scores your site on 7 critical security headers: HSTS, Content-Security-Policy, X-Content-Type-Options, X-Frame-Options, Permissions-Policy, Referrer-Policy, and X-XSS-Protection. Headers are organized by category for easy review. Essential for web developers, SEO specialists, and digital marketers who work with URLs and web infrastructure. Analyzes results in real time with detailed reports and actionable insights for your web properties.

All
Headers
7
Security Checks
Fast
Response
Free
Forever

Why Choose HTTP Header Checker on Rune

Speed and privacy sit at the core of HTTP Header Checker. With all response headers and security analysis, the tool delivers results in seconds while keeping your data entirely on your device. No cloud uploads, no server-side processing, no third-party tracking.

HTTP Header Checker was built for people who need dependable results without jumping through hoops. Visual score bar showing what percentage of security headers are properly configured. That kind of straightforward design is what sets this apart from the many other tools that promise the same thing.

Key Features of HTTP Header Checker

A complete feature set designed for real http header checker workflows

All Response Headers

View every HTTP response header returned by the server in an organized display.

Security Analysis

Score based on 7 critical security headers: HSTS, CSP, X-Content-Type-Options, and more.

Security Score

Visual score bar showing what percentage of security headers are properly configured.

Header Categories

Headers organized by type: Security, Caching, Content, Server, CORS, and Other.

HEAD/GET Methods

Choose HEAD for fast header-only requests or GET for full response with headers.

Copy Headers

Copy individual headers or all headers at once to clipboard.

Key Advantages of HTTP Header Checker

No installation required

HTTP Header Checker runs entirely in your browser. There is nothing to download or configure. Open the page and start working within seconds.

All Response Headers

View every HTTP response header returned by the server in an organized display. This feature is available for free with no usage limits on the standard tier.

Privacy by default

HTTP Header Checker processes your data on your machine. Your files and text stay local. Nothing is stored after you close the tab.

Mobile and desktop ready

HTTP Header Checker works on any screen size. The interface adapts to phones, tablets, and desktops so you can use it wherever you are.

No account needed

Use HTTP Header Checker without creating an account or providing an email address. The free tier gives you full access to core features.

Free with no hidden costs

HTTP Header Checker is completely free on the standard tier. There are no trial periods, no watermarks on output, and no surprise paywalls after you start using it.

Who Benefits from HTTP Header Checker

HTTP Header Checker fits into a wide range of workflows. Here is how different users put it to work.

Students and Academics
Use HTTP Header Checker for assignments, research papers, and coursework. View every HTTP response header returned by the server in an organized display.
Professionals and Teams
Integrate HTTP Header Checker into your daily workflow for faster turnaround on routine tasks. Score based on 7 critical security headers: HSTS, CSP, X-Content-Type-Options, and more.
Content Creators and Freelancers
Speed up your creative process with HTTP Header Checker. Visual score bar showing what percentage of security headers are properly configured.
Developers and Technical Users
Add HTTP Header Checker to your toolkit for quick utility tasks between coding sessions. Headers organized by type: Security, Caching, Content, Server, CORS, and Other.

How to Use HTTP Header Checker

No setup needed, just 3 steps to your result

01

Enter URL

Enter the URL you want to check response headers for.

02

Choose Method

Select HEAD (faster) or GET (full response) method.

03

Review Results

See headers by category and review the security header analysis.

Rune pro tipsPro Tips

  • A security score of 70%+ is good. Key headers to have are HSTS, CSP, and X-Content-Type-Options.
  • HEAD requests are faster because the server doesn't send the response body, just headers.
  • Check Cache-Control and ETag headers to verify your caching strategy is working correctly.
  • Missing HSTS header means browsers won't enforce HTTPS, add it with a long max-age for security.

Getting the Best Results with HTTP Header Checker

Start by enter url. Enter the URL you want to check response headers for. HTTP Header Checker accepts input immediately. No loading screens or configuration dialogs stand between you and your result.

Once your input is ready, choose method. Select HEAD (faster) or GET (full response) method. Results appear in real time, giving you immediate feedback before you commit to a final output.

Finally, review results. See headers by category and review the security header analysis. The entire process from start to finish typically takes under a minute for most inputs.

For the best experience, keep these points in mind: A security score of 70%+ is good. Key headers to have are HSTS, CSP, and X-Content-Type-Options. HEAD requests are faster because the server doesn't send the response body, just headers. Small adjustments like these can make a noticeable difference in your output quality.

What You Can Do with HTTP Header Checker

TASK 01

All Response Headers

View every HTTP response header returned by the server in an organized display. This is one of the most used features in HTTP Header Checker.

TASK 02

Security Analysis

Score based on 7 critical security headers: HSTS, CSP, X-Content-Type-Options, and more. This is one of the most used features in HTTP Header Checker.

TASK 03

Security Score

Visual score bar showing what percentage of security headers are properly configured. This is one of the most used features in HTTP Header Checker.

TASK 04

Header Categories

Headers organized by type: Security, Caching, Content, Server, CORS, and Other. This is one of the most used features in HTTP Header Checker.

Frequently Asked Questions

Quick answers for HTTP Header Checker users

What are HTTP headers?

HTTP headers are key-value pairs sent between browsers and servers with every request and response. They contain metadata about the content, caching rules, security policies, and server information.

Why check security headers?

Security headers protect against common web attacks like XSS, clickjacking, and MIME-type sniffing. Missing security headers leave your site vulnerable to exploitation.

What is a good security score?

A score of 70%+ is good. Key headers to have are Strict-Transport-Security (HSTS), Content-Security-Policy (CSP), X-Content-Type-Options, and X-Frame-Options.

What is the difference between HEAD and GET?

HEAD requests only fetch headers without the response body, making them faster. GET fetches the full response. Both return the same headers in most cases.

What is HSTS?

HTTP Strict Transport Security (HSTS) tells browsers to always connect via HTTPS, preventing downgrade attacks. It's set via the Strict-Transport-Security response header.

What is Content-Security-Policy?

CSP is a security header that controls which resources (scripts, styles, images) a page can load. It helps prevent XSS attacks by whitelisting allowed content sources.

Is HTTP Header Checker free?

Yes! HTTP Header Checker is 100% free with no usage limits. Check headers for as many URLs as you need without signing up.

What is X-Frame-Options?

X-Frame-Options is a security header that controls whether your page can be embedded in an iframe. Setting it to DENY or SAMEORIGIN prevents clickjacking attacks where attackers overlay invisible frames on your site.

Still need help?

Can't find what you're looking for? Our support team is here to assist you.

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