ZstdSharp

ZstdSharp is a port of zstd compression library to С#
Based on Zstandard v1.5.5
Supports .NET Core 3.1, .NET 5+, .NET Standard 2.0+, .NET Framework 4.6.1+

Usage

ZstdSharp has an unsafe API much the same as zstd.
There are also safe wrappers.

Compress data:

var src = File.ReadAllBytes("dickens");
using var compressor = new Compressor(level);
var compressed = compressor.Wrap(src);

Decompress data:

var src = File.ReadAllBytes("dickens.zst");
using var decompressor = new Decompressor();
var decompressed = decompressor.Unwrap(src);

Streaming compression:

using var input = File.OpenRead("dickens");
using var output = File.OpenWrite("dickens.zst");
using var compressionStream = new CompressionStream(output, level);
input.CopyTo(compressionStream);

Streaming decompression:

using var input = File.OpenRead("dickens.zst");
using var output = File.OpenWrite("dickens");
using var decompressionStream = new DecompressionStream(input);
decompressionStream.CopyTo(output);

Benchmark

Best performance is achieved on .NET. System.Runtime.Intrinsics namespace is required for hardware accelerated bit and vector operations. .NET Standard and .NET Framework will use software implementation

Comparision zstd (native) and ZstdSharp

BenchmarkDotNet=v0.13.2, OS=Windows 10 (10.0.19044.2604/21H2/November2021Update)
12th Gen Intel Core i7-12700, 1 CPU, 20 logical and 12 physical cores
.NET SDK=7.0.101
  [Host]     : .NET 7.0.1 (7.0.122.56804), X64 RyuJIT AVX2
  DefaultJob : .NET 7.0.1 (7.0.122.56804), X64 RyuJIT AVX2

Compression level 1

Method	Mean	Error	StdDev	Ratio
CompressNative	24.709 ms	0.0282 ms	0.0250 ms	1.00
CompressSharp	33.090 ms	0.0500 ms	0.0443 ms	1.34
DecompressNative	5.568 ms	0.0166 ms	0.0155 ms	1.00
DecompressSharp	6.974 ms	0.0086 ms	0.0076 ms	1.25

Compression level 5

Method	Mean	Error	StdDev	Ratio
CompressNative	70.781 ms	0.1872 ms	0.1563 ms	1.00
CompressSharp	94.276 ms	0.2301 ms	0.2040 ms	1.33
DecompressNative	6.221 ms	0.0094 ms	0.0078 ms	1.00
DecompressSharp	8.484 ms	0.0134 ms	0.0105 ms	1.36

Compression level 15

Method	Mean	Error	StdDev	Ratio
CompressNative	2,304.967 ms	19.6909 ms	17.4555 ms	1.00
CompressSharp	2,336.182 ms	19.8808 ms	17.6238 ms	1.01
DecompressNative	5.541 ms	0.0174 ms	0.0145 ms	1.00
DecompressSharp	6.987 ms	0.0227 ms	0.0201 ms	1.26