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    Resource Orchestration Service:Fn::Base64Decode

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    Resource Orchestration Service:Fn::Base64Decode

    Last Updated:Jun 17, 2026

    Decodes a Base64-encoded string and returns the original string.

    Declaration

    • JSON

      {"Fn::Base64Decode": "stringToDecode"}

    • YAML

      • Syntax for the full function name: 

        Fn::Base64Decode: stringToDecode

      • Syntax for the short form: 

        !Base64Decode stringToDecode

    Parameters

    stringToDecode: the Base64-encoded string that you want to decode.

    Return value

    The decoded string.

    Examples

    !Base64Decode QUxJWVVOIFJPUw==
    { "Fn::Base64Decode" : "QUxJWVVOIFJPUw==" }

    In this example, ALIYUN ROS is returned.