Quizlet

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Quizlet",
  "description": "Quizlet makes simple tools that let you study anything, for free",
  "version": "4.2",
  "manifest_version": 2,
  "app": {
    "urls": [
      "http://quizlet.com/"
    ],
    "launch": {
      "web_url": "http://quizlet.com/",
      "container": "tab"
    }
  },
  "icons": {
    "16": "icon_16.png",
    "128": "icon_128.png"
  }
}