HTTP Header Spy

HTTP Header Spy enables you to inspect request- response headers and cookies right after page load with no extra clicks.
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HTTP Header Spy is a powerful Chrome extension that empowers web developers and analysts to instantly inspect HTTP request and response headers alongside cookies right after the page loads, eliminating the need to open any developer tools.

With features like automatic hiding of information panels, detailed response time metrics, server IP display, full redirect path tracking, and support for XHR and sub-frame requests, this tool streamlines header inspection. Users can also select from light or dark themes, filter and highlight headers, and position the viewing panel in any corner of the browser window. HTTP Header Spy makes it easy to analyze form data, GET parameters, cookies, and security features such as HSTS with colorful visual status indicators, enhancing productivity and ease of debugging.

Manifest V2 Developer Tools Productivity Privacy & Security
By:
Michiel Roos
Daily users:
291 12
Rating:
4.80
(5)
Version:
2.0.49 Last updated: 2020-01-09
Version code:
4937667
Creation date:
2020-01-09
Risk:
High risk impact Low risk likelihood
Permissions:
  • http://*/*
  • https://*/*
  • tabs
  • activeTab
  • storage
  • webRequest
Size:
608.70K
Email:
mi*****@michielroos.com
URLs:
Website
Full description:
See detailed description
Source:
Firefox Browser Add-ons
Updated:
a day ago

Ranking

# 6,080 ▲ 58
Other rankings
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Other platforms

HTTP Header Spy (v2.0.49)
10,000+ 3.79 (62)

User reviews

by 全民三退解体中共邪教, 2025-04-08
by 远离中共邪教快退出党团队, 2025-02-22
by geeknik, 2024-06-08
View all user reviews ›

Extension safety

Risk impact

HTTP Header Spy requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

HTTP Header Spy has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
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Upgrade to see full risk analysis details

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