Examine source code of Font Changer

{
  "manifest_version": 3,
  "name": "__MSG_extName__",
  "description": "__MSG_extDesc__",
  "version": "3.0.2",
  "default_locale": "en",
  "icons": {
    "16": "assets/logo_16.png",
    "24": "assets/logo_24.png",
    "32": "assets/logo_32.png",
    "48": "assets/logo_48.png",
    "128": "assets/logo_128.png"
  },
  "action": {
    "default_popup": "src/popup/index.html",
    "default_icon": {
      "16": "assets/logo_16.png",
      "32": "assets/logo_32.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9c291d2c-0c89-40df-958c-24cf23cc06af}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "assets/index.ts-x5jxx9gS.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "js": [
        "assets/index.ts-loader-DqYuGmKd.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "<all_urls>"
      ],
      "resources": [
        "assets/browser-polyfill-CZ_dLIqp.js",
        "assets/fonts-B0sfR6Mz.js",
        "assets/index.ts-y9iFX9Pe.js"
      ]
    }
  ]
}