Examine source code of Random HAL article

{
  "manifest_version": 2,
  "name": "Random HAL article",
  "version": "1.0",
  "description": "This extension will show you a random article from HAL",
  "permissions": [
    "tabs",
    "activeTab",
    "https://api.archives-ouvertes.fr/*"
  ],
  "browser_action": {
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "popup.js"
    ],
    "persistent": false
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{553cde55-d21e-42a0-94f4-68a7b007e3bc}"
    }
  }
}