Examine source code of Full Page Screenshotter

{
  "manifest_version": 2,
  "name": "Fullscreen Shotter",
  "version": "2.3.5",
  "description": "Capture full-page screenshots including scroll areas",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "browser_action": {
    "default_title": "Take Fullscreen Screenshot",
    "default_popup": "popup/popup.html"
  },
  "commands": {
    "capture-static": {
      "description": "Capture the current page with Fast Capture"
    },
    "capture-dynamic": {
      "description": "Capture the current page with Dynamic Scroll Capture"
    }
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": false
  },
  "background": {
    "scripts": [
      "lib/diagnostics.js",
      "lib/dimensions.js",
      "lib/image.js",
      "lib/capture.js",
      "background/background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/scroll-strategies.js",
        "content/overlay-manager.js",
        "content/background-manager.js",
        "content/motion-manager.js",
        "content/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "activeTab",
    "storage",
    "clipboardWrite",
    "<all_urls>"
  ],
  "optional_permissions": [
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8a2d3f3a-6e5e-4f1d-9b6b-1c8e5f0c1234}",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}