FlexHeaders - Modify HTTP Headers Firefox

Download FlexHeaders - Modify HTTP Headers

By: Harrison Deo Add-on
Download FlexHeaders - Modify HTTP Headers (current and past versions) for Firefox
Latest Version: 1.8.1 Updated: 8 days ago

Ready to install?

FlexHeaders - Modify HTTP Headers is available to install from Firefox Add-ons Store and for download from this page.
View source code
439
Daily users
5.0
2 ratings
5
Total downloads

Available versions

You can find the current and older versions of FlexHeaders - Modify HTTP Headers 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
1.8.1XPI · ZIP · Source code156.51KB02026-07-19
1.7.1XPI · ZIP · Source code143.12KB02026-07-16
1.7.0XPI · ZIP · Source code143.09KB02026-07-16
1.6.2Paid users only509.51KB02026-07-14
1.5.0Paid users only443.43KB02026-07-10
1.0.1Paid users only423.51KB52024-10-04
0.4.10Paid users only395.56KB02024-09-25
1.8.1 156.51KB
2026-07-19 · 0 downloads
XPI ZIP Source code
1.7.1 143.12KB
2026-07-16 · 0 downloads
XPI ZIP Source code
1.7.0 143.09KB
2026-07-16 · 0 downloads
XPI ZIP Source code
1.6.2 509.51KB
2026-07-14 · 0 downloads
Paid users only
1.5.0 443.43KB
2026-07-10 · 0 downloads
Paid users only
1.0.1 423.51KB
2024-10-04 · 5 downloads
Paid users only
0.4.10 395.56KB
2024-09-25 · 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 FlexHeaders - Modify HTTP Headers ZIP file.
  • In Firefox browser, go to about:addons to open Add-ons Manager
  • Click on ⚙, Install Add-on From File
  • Select the FlexHeaders - Modify HTTP Headers ZIP file from step 1. FlexHeaders - Modify HTTP Headers is now installed on your browser.

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