remotely-save/docs/remote_services/s3_general/s3_cors_configure.md

How To Configure S3 CORS Rules

If you are using the latest version of this plugin AND Obsidian desktop >= 0.13.25, mobile >= 1.1.1, you do not need to configure it any more. If you are using Obsidian desktop < 0.13.25, moble < 1.1.1, you are required to configure the rules as following.

Thanks to @NAL100 in the Discussion.

Please try this config:

[
  {
    "AllowedHeaders": ["*"],
    "AllowedMethods": ["GET", "PUT", "POST", "DELETE", "HEAD"],
    "AllowedOrigins": [
      "app://obsidian.md",
      "capacitor://localhost",
      "http://localhost"
    ],
    "ExposeHeaders": [
      "Content-Length",
      "Content-Type",
      "Connection",
      "Date",
      "ETag",
      "Server",
      "x-amz-delete-marker",
      "x-amz-id-2",
      "x-amz-request-id",
      "x-amz-version-id"
    ]
  }
]