---
type: "datatype"
title: "base64Binary"
datatype: "base64Binary"
---
# base64Binary

- [Datatypes](/datatypes)
- [Definitions](/datatypes-definitions#base64Binary)
- [Examples](/datatypes-examples#base64Binary)
- [Mappings](/datatypes-mappings#base64Binary)
- [Profiles](/datatypes-profiles#base64Binary)

## Primitive Details
- **Definition**: A stream of bytes
- **Comments**: A stream of bytes, base64 encoded
- **XML Schema/Base**: `base64Binary`
- **JSON Type**: `string`
- **Regex**: `(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?`
- **v3 Mapping**: `BIN`
- **v2 Mapping**: `~ED`