diff --git a/s3/s3.go b/s3/s3.go
index f614117cca683e5345b1769b649bbe23716f6f14..ddae2b0fac635365527605b0fdf64103cf0e31df 100644
--- a/s3/s3.go
+++ b/s3/s3.go
@@ -54,6 +54,9 @@ const (
 	// MIMETypeImage defines the constant for the Image MIME type.
 	MIMETypeImage MIMEType = "image/*"
 
+	// MIMETypePNG defines the constant for the PNG MIME type.
+	MIMETypePNG MIMEType = "image/png"
+
 	// MIMETypeDefault defines the constant for the default MIME type.
 	MIMETypeDefault MIMEType = "application/octet-stream"