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+## About
+
+<!-- A description of the package and where one can find more documentation -->
+
+This package provides a low-level .NET (ECMA-335) metadata reader and writer. It's geared for performance and is the ideal choice for building higher-level libraries that intend to provide their own object model, such as compilers. The metadata format is defined by the [ECMA-335 - Common Language Infrastructure (CLI)](https://www.ecma-international.org/publications-and-standards/standards/ecma-335) specification and [its amendments](https://github.com/dotnet/runtime/blob/main/docs/design/specs/Ecma-335-Augments.md).
+
+The `System.Reflection.Metadata` library is included in the .NET Runtime shared framework. The package can be installed when you need to use it in other target frameworks.
+
+## How to Use
+
+<!-- A compelling example on how to use this package with code, as well as any specific guidelines for when to use the package -->
+
+The following example shows how to read assembly information using PEReader and MetadataReader.
+
+```cs
+using System;
+using System.IO;
+using System.Reflection.Metadata;
+using System.Reflection.PortableExecutable;
+
+class Program
+{
+    static void Main()
+    {
+        // Open the Portable Executable (PE) file
+        using var fs = new FileStream("Example.dll", FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
+        using var peReader = new PEReader(fs);
+
+        // Display PE header information
+        PEHeader header = peReader.PEHeaders.PEHeader;
+        Console.WriteLine($"Image base:     0x{header.ImageBase:X}");
+        Console.WriteLine($"File alignment: 0x{header.FileAlignment:X}");
+        Console.WriteLine($"Subsystem:      {header.Subsystem}");
+
+        // Display .NET metadata information
+        if (!peReader.HasMetadata)
+        {
+            Console.WriteLine("Image does not contain .NET metadata");
+            return;
+        }
+
+        MetadataReader mr = peReader.GetMetadataReader();
+        AssemblyDefinition ad = mr.GetAssemblyDefinition();
+        Console.WriteLine($"Assembly name:  {ad.GetAssemblyName().ToString()}");
+        Console.WriteLine();
+        Console.WriteLine("Assembly attributes:");
+
+        foreach (CustomAttributeHandle attrHandle in ad.GetCustomAttributes())
+        {
+            CustomAttribute attr = mr.GetCustomAttribute(attrHandle);
+
+            // Display the attribute type full name
+            if (attr.Constructor.Kind == HandleKind.MethodDefinition)
+            {
+                MethodDefinition mdef = mr.GetMethodDefinition((MethodDefinitionHandle)attr.Constructor);
+                TypeDefinition tdef = mr.GetTypeDefinition(mdef.GetDeclaringType());
+                Console.WriteLine($"{mr.GetString(tdef.Namespace)}.{mr.GetString(tdef.Name)}");
+            }
+            else if (attr.Constructor.Kind == HandleKind.MemberReference)
+            {
+                MemberReference mref = mr.GetMemberReference((MemberReferenceHandle)attr.Constructor);
+
+                if (mref.Parent.Kind == HandleKind.TypeReference)
+                {
+                    TypeReference tref = mr.GetTypeReference((TypeReferenceHandle)mref.Parent);
+                    Console.WriteLine($"{mr.GetString(tref.Namespace)}.{mr.GetString(tref.Name)}");
+                }
+                else if (mref.Parent.Kind == HandleKind.TypeDefinition)
+                {
+                    TypeDefinition tdef = mr.GetTypeDefinition((TypeDefinitionHandle)mref.Parent);
+                    Console.WriteLine($"{mr.GetString(tdef.Namespace)}.{mr.GetString(tdef.Name)}");
+                }
+            }
+        }
+    }
+}
+
+```
+
+## Main Types
+
+<!-- The main types provided in this library -->
+
+The main types provided by this library are:
+
+* `System.Reflection.Metadata.MetadataReader`
+* `System.Reflection.PortableExecutable.PEReader`
+* `System.Reflection.Metadata.Ecma335.MetadataBuilder`
+* `System.Reflection.PortableExecutable.PEBuilder`
+* `System.Reflection.PortableExecutable.ManagedPEBuilder`
+
+## Additional Documentation
+
+<!-- Links to further documentation -->
+
+* [System.Reflection.Metadata.MetadataReader](https://learn.microsoft.com/dotnet/api/system.reflection.metadata.metadatareader)
+* [System.Reflection.PortableExecutable.PEReader](https://learn.microsoft.com/dotnet/api/system.reflection.portableexecutable.pereader)
+* [System.Reflection.Metadata.Ecma335.MetadataBuilder](https://learn.microsoft.com/dotnet/api/system.reflection.metadata.ecma335.metadatabuilder)
+* [System.Reflection.PortableExecutable.PEBuilder](https://learn.microsoft.com/dotnet/api/system.reflection.portableexecutable.pebuilder)
+* [System.Reflection.PortableExecutable.ManagedPEBuilder](https://learn.microsoft.com/dotnet/api/system.reflection.portableexecutable.managedpebuilder)
+
+## Feedback & Contributing
+
+<!-- How to provide feedback on this package and contribute to it -->
+
+System.Reflection.Metadata is released as open source under the [MIT license](https://licenses.nuget.org/MIT). Bug reports and contributions are welcome at [the GitHub repository](https://github.com/dotnet/runtime).