Examine source code of UniqCont

{
  "description": "Plagiarism checker for Firefox: UniqCont extension allows you to check text of a webpage for uniqueness and find duplicate content on the web.",
  "manifest_version": 2,
  "name": "UniqCont",
  "version": "1.0",
  "homepage_url": "https://www.uniqcont.com/",
  "icons": {
    "48": "icons/icon-48.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "icons/icon-32.png",
    "default_title": "UniqCont",
    "default_popup": "popup/popup.html"
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  }
}