Crawl date checker for Google

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "version": "1.0.3",
  "name": "Crawl date checker for Google",
  "description": "Install the Google bot last crawl date checker extension to access the last crawl date and time of any web page by google.",
  "background": {
    "service_worker": "background/background.js"
  },
  "action": {
    "default_popup": "index.html",
    "default_icon": "./assets/logo_2000.png",
    "default_title": "Crawl date checker for Google"
  },
  "icons": {
    "16": "./assets/logo_16.png",
    "32": "./assets/logo_32.png",
    "64": "./assets/logo_64.png",
    "128": "./assets/logo_128.png",
    "2000": "./assets/logo_2000.png"
  },
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/content.js"
      ]
    }
  ],
  "permissions": [
    "storage",
    "activeTab",
    "notifications"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "assets/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}