Modern web standards require at least two key icon sizes to make an app "installable": and 512x512px . The 192px version is the sweet spot for:
Use the Maskable.app Editor . Upload your logo, ensure the entire subject fits inside the "Circle" preview, and export the 192x192 version. icon-192x192.png
"icons": [ "src": "/icons/icon-192x192.png", "sizes": "192x192", "type": "image/png", "purpose": "any maskable" ] Use code with caution. Modern web standards require at least two key
"icons": [