Examine source code of StrawPage Frames

{
  "manifest_version": 3,
  "name": "StrawPage Frames",
  "version": "1.0",
  "description": "The extension works only on *.straw.page websites and allows for image upload and processing.",
  "icons": {
    "16": "icon.png",
    "48": "icon.png",
    "128": "icon.png"
  },
  "action": {
    "default_icon": {
      "16": "icon.png",
      "48": "icon.png",
      "128": "icon.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.straw.page/*"
      ],
      "js": [
        "pako.min.js",
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "strawpage-frames@example.com",
      "strict_min_version": "109.0"
    }
  }
}