Examine source code of Link Extractor

{
  "manifest_version": 2,
  "name": "Link Extractor",
  "version": "1.0",
  "description": "Extract all links from any webpage, display them in a scrollable list, and copy individual or all links to the clipboard with a slate blue interface.",
  "icons": {
    "48": "icon.png"
  },
  "permissions": [
    "activeTab",
    "clipboardWrite"
  ],
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c6d7a360-5c56-4b1a-99c7-d6d7d96c32b3}"
    }
  }
}