How to use Enter a URL; the tool fetches full HTTP response headers via a backend proxy and displays status code, Server, CSP, cache and other key info.
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CrossKit HTTP Header Viewer

Inspect HTTP response headers — Server, CSP, CORS, cache policy, redirects and more.

Server info
CSP check
CORS headers
Cache policy
Free forever
Important Disclaimer

This tool is provided for legitimate testing and educational purposes only. By using this tool, you agree NOT to:

  • Use it for malicious crawling, scraping, or unauthorized access to websites
  • Use it for DDoS attacks, brute-force attempts, or any form of cyber attack
  • Use it to bypass security measures, rate limits, or access controls
  • Violate any applicable laws or the terms of service of any website

CrossKit is not responsible for any misuse of this tool. Users assume full legal liability for their actions. All processing is done server-side for technical reasons, but we do not log or store your queries.

Tips

Check security

Verify CSP, X-Frame-Options, HSTS and other security headers for your site.

SEO audit

Check Server header, cache-control and redirect status to optimize site performance.

Legal use only

Use this tool to check your own sites. Do not scan third-party sites excessively.

Pain point

The problem Free HTTP Header Viewer | CrossKit solves

Cross-border selling involves repetitive tasks that eat into margin. This tool automates one of those tasks so you can focus on growth.

Try it

Input example → output preview

Example input Your raw data or text
Example output Clean, ready-to-use result
How to use

3 steps to get your result

  1. 1
    Open the tool

    No sign-up is required. The tool loads directly in your browser.

  2. 2
    Paste or upload your content

    Files are processed locally when possible; only AI tools send data to the server for the duration of the job.

  3. 3
    Copy the result

    Download, copy or export the output and paste it into your listing, store or report.

Walkthrough

A real use case for CrossKit HTTP Header Viewer

  1. Fill the form with one real item from your catalogue.
  2. Run the tool and copy the result into your workflow.
  3. Repeat with 5-10 items to see whether it saves you time.

What Free HTTP Header Viewer | CrossKit does for sellers

CrossKit HTTP Header Viewer is a free tool for site operators and affiliate marketers. Inspect HTTP response headers of any URL — see Server, X-Frame, CSP…

CrossKit tools are designed for cross-border sellers: free to start, privacy-first, and running directly in your browser. Use this tool to save time on repetitive tasks and keep your data on your device.

Why CrossKit?

  • No credit card required
  • Runs in your browser
  • Free core tools forever
  • Built for Amazon, Shopify & TikTok Shop
  • Higher quotas with Pro
Upgrade to Pro