Examine source code of Bookmarked Speed Dial

{
  "version": "0.1.34resigned1",
  "name": "Bookmarked Speed Dial",
  "manifest_version": 2,
  "short_name": "speeddial",
  "background": {
    "scripts": [
      "data/js/utils.js",
      "data/js/background.js"
    ]
  },
  "options_ui": {
    "browser_style": true,
    "page": "data/options.html"
  },
  "description": "Speed Dial integrated with your bookmarks. Based on Speed Dial (Lite) by Mark Lumnert",
  "permissions": [
    "tabs",
    "storage",
    "unlimitedStorage",
    "bookmarks",
    "<all_urls>",
    "contextMenus"
  ],
  "chrome_url_overrides": {
    "newtab": "data/index.html"
  },
  "browser_action": {
    "browser_style": true,
    "default_title": "Open Bookmarked Speed Dial",
    "default_icon": {
      "32": "data/img/32.png",
      "48": "data/img/48.png",
      "64": "data/img/64.png",
      "128": "data/img/128.png"
    }
  },
  "page_action": {
    "browser_style": true,
    "default_title": "Add to Bookmarked Speed Dial",
    "default_icon": {
      "32": "data/img/32.png",
      "48": "data/img/48.png",
      "64": "data/img/64.png",
      "128": "data/img/128.png"
    }
  },
  "icons": {
    "32": "data/img/32.png",
    "48": "data/img/48.png",
    "64": "data/img/64.png",
    "128": "data/img/128.png"
  },
  "applications": {
    "gecko": {
      "strict_min_version": "54.0",
      "id": "{83a9ecbd-0360-4fee-8822-233ed92cf930}"
    }
  }
}