FIX Parser

Paste a FIX (Financial Information eXchange) message to see every tag and value decoded, with field names, enum meanings, and checksum verification. SOH, pipe, and other delimiters are detected automatically.

How to use FIX Parser

1. Paste a FIX message and the delimiter is detected automatically, then every tag and value is listed.
2. SOH (\x01), pipe, caret, semicolon, newline, or a custom character can be used as the delimiter.
3. Field names and enum meanings (MsgType=D → NewOrderSingle, Side=1 → Buy) are shown, and BodyLength and CheckSum are verified.
4. Switch to "Build manually" to compose a message tag by tag and copy it.

Frequently asked questions

Is my message uploaded?

No. Parsing and verification happen entirely in your browser.

Does it understand <SOH> from logs?

Yes. Notations such as \x01, <SOH>, {SOH}, and ^A are converted to the real delimiter automatically.