Examine source code of Full Page Screenshot & Webpage to PDF

{
  "manifest_version": 3,
  "name": "Full Page Screenshot & Webpage to PDF",
  "short_name": "Full Page",
  "version": "1.0.2",
  "description": "Capture a full page screenshot of any webpage. Auto-scrolls, stitches, exports PNG, JPG or PDF. Processed locally on your device.",
  "author": "Full Page Screenshot",
  "homepage_url": "https://fullpage-screenshot.ai.studio",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "Full Page Screenshot — capture the full page",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "background/service-worker.js"
    ],
    "type": "module"
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "unlimitedStorage"
  ],
  "commands": {
    "capture-full-page": {
      "suggested_key": {
        "default": "Alt+Shift+P",
        "mac": "Alt+Shift+P"
      },
      "description": "Capture the full page"
    }
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; style-src 'self'; img-src 'self' blob: data:; font-src 'self'; connect-src 'none'; base-uri 'none'; form-action 'none'"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "full-page-screenshot@fullpage-screenshot.ai.studio",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}