Read any EDI X12 file in seconds.

Paste a raw EDI transaction — 850, 810, 856 (ASN), 820, 855, 997 and more — and get a clean, human-readable breakdown of every segment and element.

🔒 Your file never leaves your computer. All parsing happens locally in your browser.

Paste raw EDI X12

Waiting for input…

Human-readable output

⌖

Parsed segments will appear here.
Paste an EDI file or load the sample.

💬

A plain-English summary of the transaction
will appear here after you parse a file.

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What is this EDI X12 viewer?

EDI (Electronic Data Interchange) X12 files are the standard way businesses exchange purchase orders, invoices, shipping notices and payments. The raw format is a dense string of segments separated by ~ and elements separated by * — almost impossible to read by eye. This free tool parses that raw text and labels every segment and element so you can actually understand it. Nothing is uploaded: the parsing runs entirely in your browser, which means even sensitive trading-partner data stays on your machine.

Supported transaction sets

This viewer auto-detects the transaction type from the ST segment and produces a plain-English business summary for the most common sets across industries. Any other transaction set still gets a full segment-by-segment breakdown.

Supply chain & retail

850 — Purchase Order
855 — Purchase Order Acknowledgment
860 — Purchase Order Change Request
856 — Advance Ship Notice (ASN)
810 — Invoice
846 — Inventory Inquiry / Advice
940 / 945 — Warehouse Shipping Order / Advice

Healthcare (HIPAA)

837 — Health Care Claim
835 — Health Care Claim Payment / Remittance
270 / 271 — Eligibility & Benefit Inquiry / Response
276 / 277 — Claim Status Request / Response
834 — Benefit Enrollment & Maintenance

Finance

820 — Payment Order / Remittance Advice

Transportation & logistics

204 — Motor Carrier Load Tender
210 — Motor Carrier Freight Invoice
214 — Transportation Carrier Shipment Status
990 — Response to a Load Tender

Acknowledgments

997 / 999 — Functional / Implementation Acknowledgment

How to read an EDI X12 file

Every X12 interchange is wrapped in an ISA/IEA envelope, then one or more functional groups (GS/GE), and inside those, transaction sets (ST/SE). The ST segment tells you which transaction type you are looking at. This viewer auto-detects the delimiters from the ISA segment and walks the structure for you.

Frequently asked questions

Is my EDI data uploaded anywhere?

No. Parsing happens entirely in your browser using JavaScript. The file content never touches a server, which is why this is safe for confidential trading-partner data.

Which transaction sets are supported?

The parser labels the structural envelope (ISA, GS, ST, SE, GE, IEA) and the most common business segments. Unknown segments are still shown with their raw elements so nothing is lost.

Does it work with both ~ and newline terminators?

Yes. The delimiters are read directly from the ISA segment when present, and the tool falls back to common defaults otherwise.

Is it really free?

Yes, free with no sign-up. The site is supported by ads.