Examine source code of Dead Pixel Ghost Tab

{
  "manifest_version": 3,
  "name": "Dead Pixel Ghost Tab",
  "version": "1.3.0",
  "description": "A new tab page for the Dead Pixel Ghost Club collection.",
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "hello@dpgt.party",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "action": {
    "default_icon": {
      "16": "icons/16x16.png",
      "38": "icons/38x38.png",
      "48": "icons/48x48.png",
      "128": "icons/128x128.png"
    },
    "default_title": "DPGt Settings",
    "default_popup": "settings.html"
  },
  "icons": {
    "16": "icons/16x16.png",
    "38": "icons/38x38.png",
    "48": "icons/48x48.png",
    "128": "icons/128x128.png"
  }
}