HTTP Header Spy

michielroos.com

3.8(

61 ratings

)

Extension Developer Tools9,000 users

Item media 5 (screenshot) for HTTP Header Spy

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Overview

HTTP Header Spy enables you to inspect request- response headers and cookies right after page load with no extra clicks.

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 ★ Filter headers to be shown ★ Highlight any string pattern in the header views

3.8 out of 5
61 ratings
Learn more about results and reviews.

Details

Version
3.0.0
Updated
September 5, 2026
Flag concern
Size
293KiB
Languages
6 languages
Developer
Website
Email
michiel@michielroos.com
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization

The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

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