FIX Decoder
Decode a single FIX message or a whole engine log. Supports FIX 4.0–4.4 and FIX 5.0 SP2.
Runs server-side - your message is sent to the FixPortal parser and isn't stored.
Message
One message, decoded deep. Dictionary picker, custom XML, XPath filter, validation, type and empty-group toggles.
Log
A whole engine log. Strips timestamps and prefixes, lists every message, decodes on click. Check rows to open them in Message mode for the deep tools.
Accepts SOH (^A) or | as separator.
Paste a FIX message to decode.
Samples3 scenariosclick to expandclick to collapse
Messages
Decoded fields will appear here
Paste a message above - or pick one from "Load a sample" - then Decode. You'll get HEADER, BODY and TRAILER broken out field by field, with repeating groups collapsible.
HEADERBODYTRAILER
Accepts SOH (^A) or | separators.
Samples3 scenariosclick to expandclick to collapse
Realistic
Edge cases