Examine source code of Bookmark Dial

{
  "applications": {
    "gecko": {
      "id": "bookmarkdial@sblask",
      "strict_min_version": "55.0"
    }
  },
  "author": "Sebastian Blask",
  "background": {
    "scripts": [
      "hermite.js",
      "background.js"
    ]
  },
  "browser_action": {
    "browser_style": false,
    "default_icon": "icon.svg",
    "default_popup": "options/options.html",
    "default_title": "Bookmark Dial"
  },
  "chrome_url_overrides": {
    "newtab": "content-scripts/bookmark-dial.html"
  },
  "description": "Display the contents of a bookmark folder as thumbnails with title every time the user opens a new tab.",
  "homepage_url": "https://github.com/sblask/webextension-bookmark-dial",
  "icons": {
    "48": "icon.svg"
  },
  "manifest_version": 2,
  "name": "Bookmark Dial",
  "options_ui": {
    "page": "options/options.html"
  },
  "permissions": [
    "<all_urls>",
    "bookmarks",
    "tabs",
    "storage",
    "unlimitedStorage"
  ],
  "version": "2.0.5resigned1"
}