Examine source code of Contact Clipper

{
  "manifest_version": 3,
  "name": "Contact Clipper",
  "description": "Extract email addresses, phone numbers, and social profile links from the current page.",
  "version": "0.7.17",
  "icons": {
    "16": "assets/icon-16.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png"
  },
  "action": {
    "default_title": "Contact Clipper",
    "default_popup": "src/popup.html",
    "default_icon": {
      "16": "assets/icon-16.png",
      "32": "assets/icon-32.png"
    }
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "https://contactclipper.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "contact-clipper@contactclipper.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "personallyIdentifyingInfo",
          "authenticationInfo"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}