Examine source code of ScrollAnywhere

{
  "manifest_version": 2,
  "version": "9.2",
  "author": "Juraj Mäsiar",
  "default_locale": "en",
  "name": "__MSG_app_name__",
  "description": "__MSG_app_desc__",
  "icons": {
    "48": "48.png",
    "128": "128.png"
  },
  "background": {
    "page": "background/background_sa.html"
  },
  "browser_action": {
    "default_icon": {
      "128": "128.png"
    },
    "default_popup": "popup/popup.html"
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "js": [
        "content_script/scroll_anywhere.js"
      ]
    }
  ],
  "permissions": [
    "alarms",
    "storage",
    "activeTab",
    "<all_urls>"
  ],
  "optional_permissions": [
    "clipboardRead",
    "browserSettings"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "juraj.masiar@gmail.com_ScrollAnywhere",
      "strict_min_version": "91.0"
    }
  }
}