TLV Tree Visualizer
Visualise BER-TLV / EMV TLV bytes as a collapsible nested tree with tag-name lookup. The visual companion to the existing TLV parser, focused on hierarchy.
Input
Tree
Paste BER-TLV bytes.
All decoding runs locally.
About TLV
BER-TLV (ISO 7816-4 / EMV) encodes structured data with Tag, Length, Value triples. Tags can be primitive or constructed; constructed tags contain nested TLVs. EMV uses BER-TLV throughout the contact and contactless protocols.
Spec
ISO/IEC 7816-4 §5.2; EMV Books 3 + 4.