Duolingo Annoyance Blocker

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Duolingo Annoyance Blocker",
  "version": "1.0",
  "description": "Remove annoying stuff from Duolingo such as pop-up ads, mid-lesson motivation cards and 'let's review missed exercises' card",
  "permissions": [
    "storage"
  ],
  "action": {
    "default_title": "Options for Duolingo Annoyance Blocker",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.duolingo.com/*"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "icons": {
    "128": "128.png"
  }
}