Examine source code of Scroll To Top Button

{
  "manifest_version": 2,
  "default_locale": "en_US",
  "name": "__MSG_extensionName__",
  "short_name": "STTB",
  "description": "__MSG_extensionDescription__",
  "icons": {
    "16": "icons/Icon-16.png",
    "32": "icons/Icon-32.png",
    "48": "icons/Icon-48.png",
    "64": "icons/Icon-64.png",
    "128": "icons/Icon-128.png"
  },
  "permissions": [
    "activeTab",
    "contextMenus",
    "storage"
  ],
  "optional_permissions": [
    "<all_urls>",
    "*://*/*",
    "tabs"
  ],
  "background": {
    "scripts": [
      "global/js/browser-polyfill.min.js",
      "global/js/bowser.js",
      "global/js/punycode.min.js",
      "global/js/global.js",
      "global/js/event.js",
      "global/js/utils.js",
      "global/js/const.js",
      "global/js/log.js",
      "global/js/i18next/i18next.min.js",
      "global/js/i18next/i18nextXHRBackend.js",
      "shared/legacy/i18n.js",
      "shared/legacy/context-menus.js",
      "shared/legacy/background.js",
      "global/js/tabs.js",
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/Icon-16.png",
      "32": "icons/Icon-32.png"
    }
  },
  "web_accessible_resources": [
    "shared/elements/scroll-to-top-button.css",
    "shared/buttons/buttons.css",
    "shared/buttons/*.svg",
    "content-scripts.css",
    "*.json"
  ],
  "version": "12.2.0",
  "author": "PoziWorld, Inc.",
  "homepage_url": "https://scroll-to-top-button.com",
  "browser_specific_settings": {
    "gecko": {
      "id": "scroll-to-top-button@poziworld.com",
      "strict_min_version": "56.0"
    }
  },
  "options_ui": {
    "page": "options/index.html",
    "browser_style": true,
    "open_in_tab": true
  }
}