Examine source code of Text Separator Pro

{
  "manifest_version": 2,
  "name": "Text Separator Pro",
  "version": "1.7",
  "description": "Modern text separator tool with multiple formatting options",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "clipboardWrite",
    "clipboardRead"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "text-separator@hamza.com",
      "strict_min_version": "58.0"
    }
  }
}