Examine source code of ARIA DevTools

{
  "name": "ARIA DevTools",
  "version": "1.3.9",
  "manifest_version": 2,
  "description": "Easily spot missing ARIA labels, misused ARIA roles, and incomplete keyboard support in your web applications.",
  "homepage_url": "https://chrome.google.com/webstore/detail/aria-devtools/dneemiigcbbgbdjlcdjjnianlikimpck?hl=en",
  "icons": {
    "16": "logo-256.png",
    "48": "logo-256.png",
    "128": "logo-256.png",
    "256": "logo-256.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_title": "ARIA DevTools"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "windows": "Ctrl+Shift+A",
        "mac": "Command+Shift+A",
        "chromeos": "Ctrl+Shift+A",
        "linux": "Ctrl+Shift+A"
      }
    }
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ad1a7f36-2ebd-49a5-938b-bb6cc9666a2b}"
    }
  }
}