Examine source code of Bookmark Session

{
  "name": "Bookmark Session",
  "version": "1.1",
  "description": "Bookmarks your session",
  "permissions": [
    "tabs",
    "bookmarks"
  ],
  "browser_action": {
    "default_title": "Bookmark Session",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "32": "images/icon32.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "manifest_version": 2,
  "web_accessible_resources": [
    "images/icon16.png",
    "images/icon32.png",
    "images/icon48.png",
    "images/icon128.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{e72f8de0-89c6-4734-bd7d-54aa22f72f8a}"
    }
  }
}