public static async Task <SanityDocumentResponse <SanityImageAsset> > UploadImageAsync(this SanityClient client, Uri imageUrl, string label = null, CancellationToken cancellationToken = default) { if (imageUrl == null) { throw new ArgumentNullException(nameof(imageUrl)); } //Default to JPG var mimeType = MimeTypeMap.GetMimeType(".jpg"); var fileName = imageUrl.PathAndQuery.Split('?')[0].Split('#')[0].Split('/').Last(); var extension = fileName.Split('.').Last(); if (extension != fileName) { mimeType = MimeTypeMap.GetMimeType(extension); } using (var fs = await _httpClient.GetStreamAsync(imageUrl).ConfigureAwait(false)) { var result = await client.UploadImageAsync(fs, fileName, mimeType, label ?? "Source:" + imageUrl.OriginalString, cancellationToken).ConfigureAwait(false); fs.Close(); return(result); } }