Method 1: Temporary install (developer mode)
- Open Firefox and go to about:debugging in the address bar
- Click "This Firefox" in the sidebar
- Click "Load Temporary Add-on…"
- Select the manifest.json file inside the extension folder
- Done! (You'll need to reload it after restarting Firefox)
Method 2: Packaged install (permanent)
Package the extension as an .xpi file:
cd openimmersive
zip -r ../openimmersive.xpi . -x "*.DS_Store" -x "__MACOSX/*"
- In Firefox, go to about:config
- Search for xpinstall.signatures.required and set it to false
- Open about:addons, click the ⚙️ icon → "Install Add-on From File"
- Select openimmersive.xpi