Firefox ================ ## Install plugin quickNdirty until restart - Visit "about:debugging" - Click "This Firefox" - Click "Load Temporary Add-on..." - Select either "manifest.json" or XPI file. For refresh, there is a button on the same page to reload the plugin. ## Create an XPI file (eg for distribution) "manifest.json" MUST be in top level dir inside ZIP. zip my.xpi manifest.json main.js ## Distribute via self-hosting Package MUST be signed by "addons.mozilla.org" (Except for ESR or dev firefox builds) XPI file can be drag-n-drop to FF to trigger install dialog. Or via gear icon "install from file".