Examine source code of Tabzie

{
  "manifest_version": 2,
  "name": "Tabzie",
  "version": "1.2.3",
  "description": "A minimal tab organizer",
  "homepage_url": "https://github.com/fgkolf/tabzie",
  "icons": {
    "48": "/images/logo.png",
    "96": "/images/logo96.png"
  },
  "applications": {
    "gecko": {
      "strict_min_version": "59.0",
      "id": "{046a2af6-14b9-4149-9aef-e2be1bf8271f}"
    }
  },
  "permissions": [
    "<all_urls>",
    "tabs",
    "bookmarks"
  ],
  "browser_action": {
    "browser_style": false,
    "default_icon": "/images/logo.png",
    "default_title": "Tabzie",
    "default_popup": "/popup/index.html"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+J",
        "windows": "Alt+J",
        "mac": "Alt+J",
        "linux": "Alt+J",
        "chromeos": "Alt+J"
      }
    }
  }
}