Beta-testing the new home for ASN1 Playground. It has the same functionality as the old, just a different layout.

Select the ASN.1 specification (enter manually, upload new, or pick existing). Compile to check the syntax and to extract the data Types to be used in Decoding and Encoding.


Enter a Value (in the ASN.1 Value Notation format) for one of the Types defined in the Schema. Click Encode. Various encoded formats will be available as links for downloading.


Select the Type. Upload a message/PDU/record file. Click Decode. The decoded data can be downloaded as a text file in the ASN.1 Value Notation format.

Console  Output
Please compile your schema