Examine source code of Openoox Bookmarks

{
  "manifest_version": 2,
  "name": "Openoox Bookmarks",
  "version": "6.1resigned1",
  "description": "No longer lose track of great websites, articles, videos... Save the best of the Web.",
  "homepage_url": "https://openoox.com",
  "icons": {
    "48": "icons/icon-48.png"
  },
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/icon-32.png",
    "default_title": "Openoox",
    "default_popup": "popup/bookmark.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6262f122-9fae-49f0-8ce7-0054b96a1f64}"
    }
  }
}