Examine source code of Clean Image Opener

{
  "manifest_version": 2,
  "name": "Clean Image Opener",
  "version": "1.2",
  "description": "Open images in new tabs with query parameters stripped",
  "permissions": [
    "contextMenus",
    "tabs",
    "storage"
  ],
  "incognito": "spanning",
  "background": {
    "scripts": [
      "utils.js",
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{05c398b6-d886-4178-b432-2a5a2cc0620e}"
    }
  }
}