Examine source code of Dro.pics Screenshot

{
  "manifest_version": 2,
  "version": "1.2.3",
  "short_name": "Dro.pics",
  "name": "Dro.pics Screenshot",
  "description": "Screenshot, Annotate & Upload",
  "homepage_url": "https://dro.pics",
  "icons": {
    "128": "icon.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "Screenshot"
  },
  "permissions": [
    "activeTab",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "screenshot@dro.pics",
      "strict_min_version": "109.0"
    }
  }
}