Examine source code of Annotate web pages with research papers and code

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    "48" : "icons/ck-logo-48.png",
    "96" : "icons/ck-logo-96.png"
  },
  "background" : {
    "scripts" : [
      "js/background.js" ,
      "js/cr.js" ,
      "js/purify.min.js" 
    ]
  },
  "web_accessible_resources" : [
    "icons/*.png"
  ],
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    "default_title" : "Collective Knowledge: exchange knowledge about research papers, code, reproducible results, scoreboards, portable workflows and reusable artifacts",
    "default_popup" : "html/cr.html"
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    "https://cknowledge.io/api/v1" ,
    "activeTab" ,
    "tabs" 
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