Simple Modify Headers - Extended Firefox

Download Simple Modify Headers - Extended

Download Simple Modify Headers - Extended (current and past versions) for Firefox
Latest Version: 6.6.0 Updated: 3 months ago

Ready to install?

Simple Modify Headers - Extended is available to install from Firefox Add-ons Store and for download from this page.
View source code
300
Daily users
5.0
3 ratings
0
Total downloads

Available versions

You can find the current and older versions of Simple Modify Headers - Extended here. You can download the archived versions or inspect their source codes.

As a free user, you can download up to 3 latest versions.
Upgrade to download older versions
VersionDownloadSizeDownload countTimestamp
6.6.0XPI · ZIP · Source code118.58KB02026-04-20
6.4.0XPI · ZIP · Source code118.09KB02026-04-19
6.3.0XPI · ZIP · Source code117.38KB02026-04-18
6.2.0Paid users only117.08KB02025-03-23
6.1.1Paid users only113.64KB02025-02-26
5.0.0Paid users only112.94KB02025-01-07
4.0.0Paid users only112.03KB02025-01-06
3.1.0Paid users only110.67KB02025-01-05
2.2.0Paid users only109.00KB02024-09-16
6.6.0 118.58KB
2026-04-20 · 0 downloads
XPI ZIP Source code
6.4.0 118.09KB
2026-04-19 · 0 downloads
XPI ZIP Source code
6.3.0 117.38KB
2026-04-18 · 0 downloads
XPI ZIP Source code
6.2.0 117.08KB
2025-03-23 · 0 downloads
Paid users only
6.1.1 113.64KB
2025-02-26 · 0 downloads
Paid users only
5.0.0 112.94KB
2025-01-07 · 0 downloads
Paid users only
4.0.0 112.03KB
2025-01-06 · 0 downloads
Paid users only
3.1.0 110.67KB
2025-01-05 · 0 downloads
Paid users only
2.2.0 109.00KB
2024-09-16 · 0 downloads
Paid users only

Install XPI file

An XPI file, short for "XPInstall," is a compressed file format used primarily by Mozilla applications, like Firefox and Thunderbird, to distribute and install add-ons or extensions. These files are similar in function to CRX files for Chrome but cater to the Mozilla ecosystem.
  • Simply drag-and-drop the XPI into Firefox to install the add-on.

Install ZIP file

  • Download the Simple Modify Headers - Extended ZIP file.
  • In Firefox browser, go to about:addons to open Add-ons Manager
  • Click on ⚙, Install Add-on From File
  • Select the Simple Modify Headers - Extended ZIP file from step 1. Simple Modify Headers - Extended is now installed on your browser.

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