SharpYaml
High-performance YAML for .NET: parser, emitter, and a System.Text.Json-style object serializer.
dotnet add package SharpYamlAvailable on NuGet — net8.0, net10.0, netstandard2.0
Familiar API
SharpYaml is intentionally shaped like
System.Text.Json: YamlSerializer, YamlSerializerOptions,
source-generated contexts, and a converter pipeline.
Two layers
Use the syntax/model layer for lossless parsing, spans, and tooling.
Use YamlSerializer to map YAML into .NET objects (not roundtrip-preserving).
NativeAOT ready
Reflection fallback can be disabled. For NativeAOT and trimming, use generated metadata via
YamlSerializerContext and YamlTypeInfo<T>.
JSON attribute interop
Most common
System.Text.Json.Serialization attributes work out of the box
(for example [JsonPropertyName], [JsonIgnore], [JsonConstructor]).
Quick example
using SharpYaml;
var yaml = YamlSerializer.Serialize(new { Name = "Ada", Age = 37 });
// Name: Ada
// Age: 37
var model = YamlSerializer.Deserialize<Person>(yaml);
Next: read the Getting started guide.