Examine source code of Schwifty Bookmarks

{
  "manifest_version": 2,
  "author": "Danila Netsvetaev",
  "name": "Schwifty Bookmarks",
  "version": "4.3.9",
  "description": "Quickly access, manage, and search bookmarks.",
  "permissions": [
    "bookmarks",
    "storage"
  ],
  "icons": {
    "16": "images/Bookmark 16x16.png",
    "32": "images/Bookmark 32x32.png",
    "48": "images/Bookmark 48x48.png",
    "128": "images/Bookmark 128x128.png"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+Space",
        "mac": "MacCtrl+Shift+Space"
      }
    }
  },
  "browser_action": {
    "default_popup": "index.html"
  }
}