Examine source code of Random Picker

{
  "manifest_version": 2,
  "name": "Random Picker",
  "version": "1.4.4",
  "description": "Make quick random decisions: roll dice in NdM notation, generate a number between any two values, toss a coin, or paste a list to draw one at random or shuffle the whole thing. Everything runs locally.",
  "icons": {
    "32": "graphics/icon-32.png",
    "48": "graphics/icon-48.png",
    "64": "graphics/icon-64.png",
    "96": "graphics/icon-96.png",
    "128": "graphics/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{183fffe9-6c9f-44eb-bde8-12814dcc2bf4}",
      "strict_min_version": "101.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [],
  "browser_action": {
    "default_title": "Random Picker",
    "default_popup": "app/popup.html",
    "default_icon": {
      "32": "graphics/icon-32.png",
      "48": "graphics/icon-48.png",
      "64": "graphics/icon-64.png"
    }
  }
}