Read It Later New Tab

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Read It Later New Tab",
  "version": "0.1.5",
  "manifest_version": 3,
  "description": "Save articles and pages to a read later list on your new tab.",
  "action": {
    "default_icon": "images/icon32.png",
    "default_popup": "popup.html"
  },
  "icons": {
    "32": "images/icon32.png",
    "64": "images/icon64.png",
    "128": "images/icon128.png"
  },
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "background": {
    "service_worker": "background.js"
  },
  "content_scripts": [
    {
      "matches": [
        "file:///"
      ],
      "js": [
        "core.js"
      ]
    }
  ],
  "permissions": [
    "storage",
    "activeTab"
  ],
  "commands": {
    "add-url": {
      "suggested_key": {
        "default": "Ctrl+Shift+L",
        "mac": "Command+Shift+L"
      },
      "description": "Add current page to ReadLater"
    }
  }
}