Protractor

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Protractor",
  "short_name": "Protractor",
  "version": "4.0.1",
  "description": "Easily measure angles in your browser window.",
  "icons": {
    "16": "images/icon16-on.png",
    "48": "images/icon48-on.png",
    "128": "images/icon128-on.png"
  },
  "action": {
    "default_title": "Protractor"
  },
  "background": {
    "service_worker": "scripts/background.js"
  },
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "activeTab",
    "storage",
    "scripting"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "images/sprite-buttons.svg"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}