Examine source code of Feel-the-Link

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "2020.10503.11623",
  "default_locale": "en",
  "icons": {
    "16": "icons/owl-16.png",
    "32": "icons/owl-32.png",
    "48": "icons/owl-48.png"
  },
  "background": {
    "scripts": [
      "background-script.js"
    ]
  },
  "permissions": [
    "<all_urls>",
    "webRequest",
    "webRequestBlocking",
    "downloads",
    "notifications",
    "contextMenus",
    "activeTab",
    "tabs"
  ],
  "web_accessible_resources": [
    "popup/popup-script.js",
    "popup/index.html"
  ],
  "browser_action": {
    "default_title": "__MSG_extensionName__",
    "default_icon": {
      "16": "icons/owl-16.png",
      "32": "icons/owl-32.png",
      "48": "icons/owl-48.png"
    },
    "browser_style": true
  },
  "page_action": {
    "default_title": "__MSG_extensionName__",
    "default_icon": {
      "16": "icons/owl-16.png",
      "32": "icons/owl-32.png",
      "48": "icons/owl-48.png"
    },
    "browser_style": true
  }
}