Examine source code of Crop Rotation Planner

{
  "manifest_version": 2,
  "name": "Crop Rotation Planner",
  "version": "1.0",
  "description": "Get crop rotation suggestions to improve productivity and soil health.",
  "permissions": [],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "128": "images/crop-logo.png"
    }
  },
  "icons": {
    "128": "images/crop-logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{03827721-529b-4eed-8cb3-6be63ae6bb51}"
    }
  }
}