Examine source code of Manipulist

{
  "manifest_version": 2,
  "name": "Manipulist",
  "description": "Toolbar button for quick access to Manipulist.com - the digital text toolkit. Sort out your data in seconds with this powerful web-based tool for text manipulation and scraping.",
  "version": "1.3resigned1",
  "homepage_url": "https://manipulist.com",
  "icons": {
    "48": "icons/manipulist-logo-48.png",
    "96": "icons/manipulist-logo-96.png"
  },
  "browser_action": {
    "default_icon": "icons/manipulist-logo-32.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8e6f5116-35cf-466a-a796-33d8978b28a9}"
    }
  }
}