Examine source code of Upload to ImageKit

{
  "manifest_version": 3,
  "name": "Upload to ImageKit",
  "version": "1.1",
  "description": "Upload images to ImageKit directly from the context menu.",
  "permissions": [
    "contextMenus",
    "activeTab",
    "storage",
    "scripting",
    "notifications"
  ],
  "host_permissions": [
    "https://upload.imagekit.io/*",
    "https://stage-upload.imagekit.io/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "Upload to ImageKit",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "jay.parekh98@gmail.com"
    }
  },
  "icons": {
    "48": "icon48.png",
    "96": "icon96.png"
  }
}