Examine source code of Open Mediumurr

{
  "manifest_version": 3,
  "name": "Open Mediumurr",
  "version": "1.0",
  "description": "Opens the current tab's URL in a new tab with a modified URL.",
  "permissions": [
    "contextMenus",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "48": "icons/medium.png",
    "96": "icons/medium.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "medium-context-2@hyperlycloud.com"
    }
  }
}