[mjevans]

I get why someone might want to avoid .zstd ; but that is the short name offered for humans.

Was .zs not sufficient if a file format ending in 'std' is so abhorrent?

[m0zg]

I'm not the one who came up with the extension. It just sort of organically happened I guess. I'd prefer "zstd" myself, but, frankly, "zst" is fine as well.

[diroussel]

Four letter extensions work really well for .java and .json. It seems strange the abbreviate zstd anymore.

[m0zg]

I'like to point out though that "zstd" is itself an abbreviation, and "zstandard" would be quite onerous.