Examine source code of Allmark

{
  "manifest_version": 2,
  "version": "0.0.3",
  "name": "Allmark - One Bookmark System for All",
  "description": "Allmark is an open-source bookmark manager with privacy-oriented approach.",
  "background": {
    "page": "index.html"
  },
  "browser_action": {
    "default_icon": {
      "16": "assets/allmark_logo_16.png",
      "32": "assets/allmark_logo_32.png",
      "48": "assets/allmark_logo_48.png",
      "64": "assets/allmark_logo_64.png",
      "128": "assets/allmark_logo_128.png"
    },
    "default_title": "Allmark Popup",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "assets/allmark_logo_16.png",
    "32": "assets/allmark_logo_32.png",
    "48": "assets/allmark_logo_48.png",
    "64": "assets/allmark_logo_64.png",
    "128": "assets/allmark_logo_128.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "unlimitedStorage",
    "bookmarks",
    "contextMenus",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "js/*.js",
    "content_scripts/*.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c3a62fa2-5c36-4011-bfb5-06156e52aa3c}"
    }
  }
}