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1. zStandard is not a standard

2. Bzip2 is somewhat is a standard

3. zStandard is not a substitute for Bzip2

In what way is bzip2 more of a "standard" than zstd? bzip2 doesn't even seem to have any official reference description of its file format; just an "unofficial" one[1], whereas zstd is RFC 8478[2].

When I evaluated various compression algorithms a few years ago zstd came ahead of bzip2 in every metric.

[1]: https://github.com/dsnet/compress/blob/master/doc/bzip2-form...

[2]: https://datatracker.ietf.org/doc/html/rfc8478

That is interesting.

The author of lzip has harsh criticism of xz, and admiration of bzip2 for error detection/correction and "rightsizing" the container format.

I use lzip in preference to xz unless I need portability.

https://www.nongnu.org/lzip/xz_inadequate.html

As far as I know xz and zstd and completely unrelated?

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