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manifest.json
{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "version": "1.0.0",
  "manifest_version": 3,
  "name": "__MSG_appName__",
  "description": "__MSG_shortDesc__",
  "default_locale": "en",
  "action": {
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icons/16x16.png",
    "48": "icons/48x48.png",
    "64": "icons/64x64.png",
    "128": "icons/128x128.png"
  },
  "permissions": [
    "scripting",
    "contextMenus"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.google.com/search*"
      ],
      "js": [
        "js/google-serp-content.js"
      ],
      "css": [
        "css/google-serp-content.css"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://*/*.pdf",
        "http://*/*.pdf"
      ],
      "js": [
        "js/pdf-viewer-content.js"
      ],
      "css": [
        "css/pdf-viewer-content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "icons/16x16.png",
        "icons/48x48.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "service_worker": "js/background.js"
  },
  "commands": {
    "openWebsite": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y"
      },
      "description": "Open Website with PDF URL"
    }
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  }
}