Examine source code of Visual ARIA

{
  "name": "Visual ARIA",
  "short_name": "VA",
  "version": "2023.2.8",
  "manifest_version": 2,
  "description": "Displays ARIA used in web technologies, includes live region, and widget roles, proper nesting and focus management.",
  "homepage_url": "https://browser.google.com/webstore/detail/visual-aria/lhbmajchkkmakajkjenkchhnhbadmhmk/related",
  "author": "Visual ARIA by Bryan Garaventa (@accdc). Extention by Laurence Lewis (@LaurenceRLewis)",
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png"
    },
    "default_title": "Visual ARIA"
  },
  "permissions": [
    "storage",
    "activeTab",
    "scripting"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{109a2a7a-3f81-47c7-82d4-1518f7644d58}"
    }
  }
}