Examine source code of ShovelShare

{
  "manifest_version": 3,
  "name": "ShovelShare",
  "version": "1.3",
  "description": "Allows users to share their current tab URL to Digg after giving explicit consent.",
  "permissions": [
    "tabs",
    "storage",
    "management"
  ],
  "host_permissions": [
    "https://beta.digg.com/"
  ],
  "action": {
    "default_title": "ShovelShare",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://beta.digg.com/d/new-post*"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "64": "icons/icon-64.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "shovelshare@extension",
      "strict_min_version": "109.0"
    }
  }
}