Examine source code of YT-Like Shortcuts

{
  "name": "YT-Like Shortcuts",
  "version": "1.6",
  "manifest_version": 2,
  "description": "YouTube-like keyboard shortcuts for any website.",
  "permissions": [
    "storage",
    "<all_urls>",
    "tabs",
    "activeTab"
  ],
  "browser_action": {
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "all_frames": true,
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "YTLikeShortcuts@chipppppppppp.github.io"
    }
  }
}