manifest.json

{
  "name": "Asana Tweaks",
  "description": "Asana doesn't get everything right.",
  "version": "1.0",
  "manifest_version": 3,
  "permissions": ["storage", "scripting", "tabs"],
  "host_permissions": [
    "https://app.asana.com/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "/images/asana-tweaks-16.png",
      "32": "/images/asana-tweaks-32.png",
      "48": "/images/asana-tweaks-48.png",
      "128": "/images/asana-tweaks-128.png"
    }
  },
  "content_scripts": [{
    "css": ["css/tweaks.css"],
    "js": ["js/content.js"],
    "matches": ["https://app.asana.com/*"]
  }],
  "icons": {
    "16": "/images/asana-tweaks-16.png",
    "32": "/images/asana-tweaks-32.png",
    "48": "/images/asana-tweaks-48.png",
    "128": "/images/asana-tweaks-128.png"
  }
}