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Modify Headers

A Firefox extension that lets you add, filter and edit HTTP request headers

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Average rating: 2.5/5 (2 votes)
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Modify Headers screenshotModify Headers is a simple and lightweight extension designed for Mozilla Firefox, which will let you easily add, filter and edit the HTTP request headers sent to various web servers. The extension is mainly useful for HTTP testing, Mobile Web Development and privacy.

The extension can be easily installed with only a few mouse clicks. The program is light on resources and will not affect the performance and stability of your web browser. A certain level of computer experience and programming knowledge is required to properly use this tool. The utility offers a simple layout, allowing you to handle your HTTP headers with minimum effort.


  • The utility can be easily and quickly installed.
  • The extension lets you easily handle HTTP headers.
Name Modify Headers
Developer | see all products from this developer
Product Homepage Modify Headers
License Free (Freeware)
Last Week Downloads 5
All Time Downloads 2,841
Filename modify_headers-
Filesize 0.1MB
MD5 Checksum EF926D9826EAC384EA070C739E0784BC
OS Support Windows All
Category Internet

100% CLEAN Certification

BadgeModify Headers has been tested by team against viruses, spyware, adware, trojan, backdoors and was found to be 100% clean. Our editors will recheck this software periodically to assure that it remains clean.


Old Versions

Software Date Added
Modify Headers May 21, 2018 - Latest Version
Modify Headers March 15, 2011

Download the free Modify Headers