Examine source code of Lufin Screenshotter

{
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "author": "Viktor Shchelochkov",
  "version": "1.0.0",
  "license": "MIT",
  "default_locale": "en",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{43d8a505-b8db-4983-8fd3-064b6e51578a}"
    }
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/16.png",
      "32": "icons/32.png"
    }
  },
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "permissions": [
    "storage",
    "<all_urls>",
    "scripting"
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval' blob:; object-src 'self'"
}