Examine source code of Movavi ScreenShot

{
  "background": {
    "scripts": [
      "scripts/Utils.js",
      "scripts/Commands.js",
      "scripts/Background.js",
      "scripts/Plugin.js"
    ]
  },
  "browser_action": {
    "default_icon": "images/icon19.png",
    "default_popup": "Popup.html",
    "default_title": "Movavi ScreenShot"
  },
  "commands": {
    "last-used-action": {
      "description": "__MSG_options_label_last_action_hotkey__",
      "suggested_key": {
        "default": "Ctrl+Shift+Y",
        "mac": "Command+Shift+Y"
      }
    }
  },
  "default_locale": "en",
  "description": "Movavi ScreenShot is a screenshot extension for Firefox that lets you grab full and partial screen captures as well as save screenshots in multiple formats.",
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "manifest_version": 2,
  "name": "Movavi ScreenShot",
  "permissions": [
    "downloads",
    "activeTab",
    "storage",
    "contextMenus",
    "tabs",
    "<all_urls>"
  ],
  "short_name": "Movavi ScreenShot",
  "version": "1.2.12",
  "web_accessible_resources": [
    "images/*.gif"
  ],
  "applications": {
    "gecko": {
      "id": "srextension@movavi.com"
    }
  }
}