Will Save: Duolingo Powered Site Blocker

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Will Save: Duolingo Powered Site Blocker",
  "short_name": "Will Save",
  "description": "Blocks time wasting sites until Duolingo reviews are done.",
  "version": "1.2.1",
  "incognito": "spanning",
  "permissions": [
    "tabs",
    "storage"
  ],
  "options_ui": {
    "page": "html/options.html",
    "chrome_style": false,
    "open_in_tab": false
  },
  "background": {
    "scripts": [
      "js/lib.js",
      "js/background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "run_at": "document_start",
      "css": [
        "css/common.css"
      ],
      "js": [
        "js/lib.js",
        "js/content.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "icons": {
    "512": "img/logos_512.png"
  },
  "web_accessible_resources": [
    "img/*.png",
    "js/*.js",
    "html/toll.html"
  ]
}