Kaitai Struct might be a good choice for that: https://kaitai.io/

I've found Kaitai struct to be an absolute joy to use on things like EEPROM dumps from car computers.

Has anyone found anything incredible for arbitrary UTF-8 data?

Honestly, VIM.

Thanks for the link, that’s really cool!

http://www.jemarch.net/poke might be interesting in that case.

I second poke. It's an amazing tool for debugging in general.

It's relatively rare to look into standardized binary formats (you'll likely look directly into a library at that point), unless you're writing a writer/parser/decoder yourself and need to double-check the output.

When developing with general binary data in mind, poke is much more useful.

Hi, i'm working on runtime kaitai support and have made good process but it's quite a big task. Keep an eye on https://github.com/wader/fq/issues/627 your interested.

I suppose OTB means “off the bat?” Non-native speaker here, and my web search turned up nothing.

I assume in this case it’s “Out (of) The Box”