HailBytes Engineering Toolkit Firefox

Download HailBytes Engineering Toolkit

Download HailBytes Engineering Toolkit (current and past versions) for Firefox
xHeader
Modify request and response headers. No ads, no malware.
Latest Version: 1.0.3 Updated: 3 months ago

Ready to install?

HailBytes Engineering Toolkit is available to install from Firefox Add-ons Store and for download from this page.
View source code
5.0
1 ratings
0
Total downloads

Available versions

You can find the current and older versions of HailBytes Engineering Toolkit 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
1.0.3XPI · ZIP · Source code77.40KB02026-04-05
1.0.1XPI · ZIP · Source code73.84KB02025-08-23
1.0.3 77.40KB
2026-04-05 · 0 downloads
1.0.1 73.84KB
2025-08-23 · 0 downloads

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

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

Best HailBytes Engineering Toolkit Alternatives

Here are some Firefox add-ons that are similar to HailBytes Engineering Toolkit: