HTTP Header Spy
HTTP Header Spy enables you to inspect request- response headers and cookies right after page load with no extra clicks.
What is HTTP Header Spy?
"HTTP Header Spy" is a comprehensive Chrome extension designed to simplify the process of inspecting HTTP headers, cookies, and response times. It automatically shows this information right after a webpage loads, eliminating the need to manually open the page inspector tool. It also offers a raft of advanced features including auto-hide panels, tracking IP, viewing XHR and sub-frame requests, monitoring of redirect paths, inspection of form data and get parameters, and header filter options, among others. It also includes customization features such as position controls, color themes, and highlight options.

Stats
- http://*/*
- https://*/*
- tabs
- activeTab
- storage
- webRequest
Chrome-Stats Rank
Other platforms

Summary
Inspect HTTP headers and response times without opening the page inspector tool. View headers right in the page you are looking at.
★ Auto-hide information panels after specified time ★ Response times ★ Server IP ★ XHR and sub-frame requests ★ Headers also available in the browser action popup ★ Follow the full redirect path ★ Show HSTS requests ★ Colorful status indication icons ★ Inspect Form Data, Get parameters and Cookies ★ Micro mode shows just the chosen response headers ★ Position in one of the four corners of the window ★ Easy single-click highlighting of the headers ★ Choose between a light and a dark color-scheme
User reviews
User reviews summary
Pros
- Micro mode feature
- Useful for debugging
- Simple to use
Cons
- Intrusive 'Get the PRO version' notification
- Expensive subscription
- Poor translation
Most mentioned
- Micro mode
- Pro version updates
- Debugging functionality
Safety
Risk impact
HTTP Header Spy is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this extension. Review carefully before installing. We recommend that you only install HTTP Header Spy if you trust the publisher.
Risk likelihood
HTTP Header Spy has earned a fairly good reputation and likely can be trusted.
Screenshots
Promo images
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