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Get URL of a current tab using Firefox 57 in an addon

  • 1 reply
  • 1 has this problem
  • Last reply by jscher2000

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This is my manifest file: {

 "description": "Test",
 "permissions": ["tabs"],
 "manifest_version": 2,
 "name": "Test",
 "version": "1.0",
 "background": {
   "scripts": ["background.js"]
    "applications": {
     "gecko": {
        "id": ""
 "browser_action": {
   "default_icon": {
     "16": "icons/icon.png",
     "32": "icons/icon.png",

"48": "icons/icon.png"



For some reason, attempting to use browser.tabs.Tab won't work. It just returns "undefined". It seems that the tabs permission isn't being given to background.js for some reason.

All Replies (1)

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This support forum focuses on end user issues. Could I suggest taking your question over to the Add-ons forum: