I built a free browser-based EDI viewer (X12 + EDIFACT), nothing gets uploaded
I worked with EDIs in the past and got tired of two things: every decent viewer is either paid enterprise software, or it wants you to upload your file to some server. Uploading real trading-partner data to a random website never sat right with me. So I built EdiPeek (edipeek.com). You paste raw EDI and it breaks down every segment and element in plain English. It also gives you a business summary of what the transaction actually means, so for an 850 it'll tell you who's ordering what from whom, for how much. It handles both X12 (850, 810, 856, 837, 835, etc.) and EDIFACT (ORDERS, INVOIC, DESADV, etc.). Everything runs locally in your browser, so nothing ever leaves your machine. That was the whole point for me, since a lot of what I look at is confidential. It's completely free, no signup. I also wrote up some guides on reading the common transaction types if that's useful to anyone. Would genuinely appreciate feedback from people who deal with this stuff daily. If there's a transaction type or segment I'm not handling well, let me know and I'll fix it.