Examine source code of Invisible Text Copy

{
  "manifest_version": 3,
  "name": "Invisible Text Copy",
  "version": "1.1",
  "description": "Convert and copy text as invisible characters directly from your browser.",
  "homepage_url": "https://faceswap.tech/",
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [
    "clipboardWrite"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "159c1dc1782118067cd0b20a77d5e646f4318382@umairyousafzai.com",
      "strict_min_version": "109.0"
    }
  }
}