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I'm looking for a graph description language to document binary streams like network packets or binary file formats (described in code, then output as a graph). Something in the same idea that DOT/Graphviz.

Here is an example of the expected result, taken from Wikipedia to describe a network packet. I'm almost sure I saw such a tool on the internet in the past year, but I cannot find it again. From what I remember the result was quite beautiful, even better than the following example.

A graph describing a network packet

Thanks for your suggestions.

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  • Perhaps you were thinking of this? Commented Oct 21, 2022 at 20:28
  • @andrewJames Tanks for the suggestion, but it's not exactly what I'm thinking about. What I have in mind really renders as boxes, like bordered tables. Commented Oct 21, 2022 at 21:11
  • Maybe pikchr (pikchr.org/home/doc/trunk/homepage.md). Text-based, lower-level than Graphviz, but very scriptable Commented Oct 21, 2022 at 21:47
  • @sroush Thanks for the suggestion! I didn't know this tool, it looks quite complete. I will check if it can draw this kind of graphs. Commented Oct 21, 2022 at 22:04

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I had the same issue (remembered that I've seen such a things a while ago but couldn't remember where) and after a lot of digging I finally found Kroki which is an unified API for various textual diagram definition languages.

I think the one I remembered was packetdiag but the results of bytefield-svg are even prettier.

I continued digging and found the IETF author resources for digrams which pointed me to the protocol tool available via in kramdown-rfc.

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