Two good options here: Brotli gets within 0.6 % of the density of lzma, zstd within 5 %. Brotli is 5x faster than lzma and zstd 9x. I'm somewhat surprised that

Two good options here: Brotli gets within 0.6 % of the density of lzma, zstd within 5 %. Brotli is 5x faster than lzma and zstd 9x. I'm somewhat surprised that some people migrated from lzma to zstd, without considering brotli.