Examine source code of Google Docs/Sheets/Slides Image Download/Zoom

{
  "manifest_version": 3,
  "name": "Google Docs Image Zoom",
  "version": "2.0.3",
  "description": "View, zoom, copy, and download images in Google Docs, Sheets, and Slides.",
  "action": {
    "default_icon": "assets/icon128.png",
    "default_popup": "dist/popup/index.html"
  },
  "options_ui": {
    "page": "dist/popup/index.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "dist/background/index.mjs"
    ],
    "type": "module"
  },
  "icons": {
    "16": "assets/icon16.png",
    "48": "assets/icon48.png",
    "128": "assets/icon128.png"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.docs.google.com/*"
      ],
      "js": [
        "dist/contentScripts/index.global.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "dist/contentScripts/style.css"
      ],
      "matches": [
        "https://*.docs.google.com/*"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b0c1ab84-61f5-4959-b706-f7131e016854}"
    }
  }
}