Examine source code of Bookmark Labeller

{
  "manifest_version": 2,
  "name": "Bookmark Labeller",
  "author": "Kyle Gough",
  "version": "1.3.1",
  "description": "Label bookmarks with emojis",
  "browser_action": {
    "default_icon": "icon.9070ae8f.svg",
    "default_title": "Bookmark Labeller",
    "default_popup": "bookmark-labeller-extension.08b54f67.html"
  },
  "background": {
    "scripts": [
      "background.7a332cf3.js"
    ]
  },
  "permissions": [
    "bookmarks",
    "contextMenus",
    "storage",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{1cbc84ca-1f1b-46b2-bbe2-0bad029eb636}"
    }
  }
}