manifest.json

{
  "name": "MPC Project Helper",
  "manifest_version": 3,
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [
    "declarativeContent"
  ],
  "host_permissions": [
    "https://www.makeplayingcards.com/",
    "https://www.printerstudio.co.uk/",
    "https://www.printerstudio.com/",
    "https://www.printerstudio.com.hk/",
    "https://www.printerstudio.de/"
  ],
  "background": {
    "service_worker": "src/background.ts"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.makeplayingcards.com/*",
        "https://www.printerstudio.co.uk/*",
        "https://www.printerstudio.com/*",
        "https://www.printerstudio.com.hk/*",
        "https://www.printerstudio.de/*"
      ],
      "js": [
        "src/content.tsx"
      ]
    }
  ],
  "action": {
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "bootstrap.min.css"
      ],
      "matches": [
        "https://www.makeplayingcards.com/*",
        "https://www.printerstudio.co.uk/*",
        "https://www.printerstudio.com/*",
        "https://www.printerstudio.com.hk/*",
        "https://www.printerstudio.de/*"
      ]
    }
  ]
}