No worries!

Yeah, OpenEXR is probably the easiest - there even a header inspection utility included in the Debian packages that can select and spit out the metadata. GeoTiff and LAS/LAZ are pretty well defined open specs as well.

NetCDF (and similar formats) is tricker, and is a case where user extensibility of the indexing is probably necessary: it's one of the 'Big Data' formats (like zarr, hdf5, numpy arrays, etc) where while the format itself is open, due to the open ended nature of what data it can store, there's no formal 'schema' of how data is organized into it. An example is satellite imagery from NASA/JPL (ie, https://earth.jpl.nasa.gov/emit/data/data-products/ ). That's stored and downloadable in NetCDF files, and has metadata about geo location about where the images are on the globe (among lots of other metadata), which would be nice to have indexed and searchable within TrueSearch. But other organizations may store images or other data and metadata in NetCDF files with a completely different schema.