# Kafka Connect BytesToString SMT Usage Reference for Confluent Cloud The `BytesToString` Single Message Transformation (SMT) converts binary data (`bytes` field) in a Kafka Connect structure into a string format. #### IMPORTANT Confluent only supports this SMT on Confluent Cloud. For complete details, see the official [BytesToString SMT](https://jcustenborder.github.io/kafka-connect-documentation/projects/kafka-connect-transform-common/transformations/BytesToString.html) documentation.