Examine source code of Linkkit — URL Shortener

{
  "manifest_version": 3,
  "name": "Linkkit — URL Shortener",
  "version": "1.0.0",
  "description": "Shorten the current tab's URL with one click using Linkkit.",
  "browser_specific_settings": {
    "gecko": {
      "id": "extension@uselinkkit.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "src/popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "src/background/background.js"
    ]
  },
  "permissions": [
    "tabs",
    "storage",
    "identity"
  ],
  "host_permissions": [
    "https://api.uselinkkit.com/*",
    "https://app.uselinkkit.com/*"
  ]
}