Examine source code of Quick Glance

{
  "manifest_version": 2,
  "name": "Quick Glance",
  "version": "1.0",
  "description": "Summarize any page into bullet points for quick reading. Press Alt+Shift+P or right-click to access the sidebar.",
  "icons": {
    "48": "icon.png"
  },
  "permissions": [
    "activeTab",
    "<all_urls>",
    "storage",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "toggle-sidebar": {
      "suggested_key": {
        "default": "Alt+Shift+P"
      },
      "description": "Toggle the sidebar"
    }
  },
  "browser_action": {
    "default_icon": {
      "48": "icon.png"
    },
    "default_popup": "popup.html",
    "default_title": "Prompt"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "sidebarStyle.css"
      ],
      "js": [
        "Readability.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{30ec2725-87c1-4c3a-b2de-b223eef8b413}"
    }
  }
}