Examine source code of Lecture Capture

{
  "manifest_version": 2,
  "name": "Lecture Capture",
  "version": "1.0",
  "description": "Easily capture screenshots from YouTube videos, organize them in the sidebar, and create PDFs for quick notes!",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "permissions": [
    "activeTab",
    "downloads"
  ],
  "background": {
    "scripts": [
      "popup.js"
    ],
    "persistent": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8acd36e7-97e1-4ab8-b67e-993b200d1bbe}"
    }
  }
}