diff --git a/src/ImageSharp/Drawing/Processors/FillShapeProcessor.cs b/src/ImageSharp/Drawing/Processors/FillShapeProcessor.cs
index 62f0481d4..f44ec56f7 100644
--- a/src/ImageSharp/Drawing/Processors/FillShapeProcessor.cs
+++ b/src/ImageSharp/Drawing/Processors/FillShapeProcessor.cs
@@ -88,7 +88,7 @@ namespace ImageSharp.Drawing.Processors
                     int offsetY = y - polyStartY;
 
                     Vector2 currentPoint = default(Vector2);
-                    Vector2 currentPointOffset = default(Vector2);
+
                     for (int x = minX; x < maxX; x++)
                     {
                         int offsetX = x - startX;
diff --git a/src/ImageSharp/Formats/Jpg/Components/Block8x8F.cs b/src/ImageSharp/Formats/Jpg/Components/Block8x8F.cs
index b1f0fb458..8b86e3bd5 100644
--- a/src/ImageSharp/Formats/Jpg/Components/Block8x8F.cs
+++ b/src/ImageSharp/Formats/Jpg/Components/Block8x8F.cs
@@ -15,9 +15,17 @@ namespace ImageSharp.Formats
     /// </summary>
     internal partial struct Block8x8F
     {
+        /// <summary>
+        /// Vector count
+        /// </summary>
         public const int VectorCount = 16;
+
+        /// <summary>
+        /// Scalar count
+        /// </summary>
         public const int ScalarCount = VectorCount * 4;
 
+#pragma warning disable SA1600 // ElementsMustBeDocumented
         public Vector4 V0L;
         public Vector4 V0R;
 
@@ -41,6 +49,7 @@ namespace ImageSharp.Formats
 
         public Vector4 V7L;
         public Vector4 V7R;
+#pragma warning restore SA1600 // ElementsMustBeDocumented
 
 #pragma warning disable SA1310 // FieldNamesMustNotContainUnderscore
         private static readonly Vector4 C_1_175876 = new Vector4(1.175876f);
@@ -59,6 +68,11 @@ namespace ImageSharp.Formats
         private static readonly Vector4 C_0_125 = new Vector4(0.1250f);
 #pragma warning restore SA1310 // FieldNamesMustNotContainUnderscore
 
+        /// <summary>
+        /// Index into the block
+        /// </summary>
+        /// <param name="idx">The index</param>
+        /// <returns>The float value at the specified index</returns>
         public unsafe float this[int idx]
         {
             [MethodImpl(MethodImplOptions.AggressiveInlining)]
@@ -143,25 +157,29 @@ namespace ImageSharp.Formats
             }
         }
 
+        /// <summary>
+        /// Multiply in place
+        /// </summary>
+        /// <param name="scalar">Scalar to multiply by</param>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public void MultiplyAllInplace(Vector4 s)
+        public void MultiplyAllInplace(Vector4 scalar)
         {
-            this.V0L *= s;
-            this.V0R *= s;
-            this.V1L *= s;
-            this.V1R *= s;
-            this.V2L *= s;
-            this.V2R *= s;
-            this.V3L *= s;
-            this.V3R *= s;
-            this.V4L *= s;
-            this.V4R *= s;
-            this.V5L *= s;
-            this.V5R *= s;
-            this.V6L *= s;
-            this.V6R *= s;
-            this.V7L *= s;
-            this.V7R *= s;
+            this.V0L *= scalar;
+            this.V0R *= scalar;
+            this.V1L *= scalar;
+            this.V1R *= scalar;
+            this.V2L *= scalar;
+            this.V2R *= scalar;
+            this.V3L *= scalar;
+            this.V3R *= scalar;
+            this.V4L *= scalar;
+            this.V4R *= scalar;
+            this.V5L *= scalar;
+            this.V5R *= scalar;
+            this.V6L *= scalar;
+            this.V6R *= scalar;
+            this.V7L *= scalar;
+            this.V7R *= scalar;
         }
 
         /// <summary>
diff --git a/src/ImageSharp/Formats/Jpg/Components/Bytes.cs b/src/ImageSharp/Formats/Jpg/Components/Bytes.cs
index f848439a0..127ba478b 100644
--- a/src/ImageSharp/Formats/Jpg/Components/Bytes.cs
+++ b/src/ImageSharp/Formats/Jpg/Components/Bytes.cs
@@ -23,8 +23,14 @@ namespace ImageSharp.Formats
         /// </summary>
         public byte[] Buffer;
 
+        /// <summary>
+        /// Start of bytes read
+        /// </summary>
         public int I;
 
+        /// <summary>
+        /// End of bytes read
+        /// </summary>
         public int J;
 
         /// <summary>
@@ -44,6 +50,9 @@ namespace ImageSharp.Formats
             return new Bytes { Buffer = ArrayPool.Rent(4096) };
         }
 
+        /// <summary>
+        /// Disposes of the underlying buffer
+        /// </summary>
         public void Dispose()
         {
             if (this.Buffer != null)
diff --git a/src/ImageSharp/Formats/Jpg/Components/Huffman.cs b/src/ImageSharp/Formats/Jpg/Components/Huffman.cs
index 74f77f303..c0d5a5caa 100644
--- a/src/ImageSharp/Formats/Jpg/Components/Huffman.cs
+++ b/src/ImageSharp/Formats/Jpg/Components/Huffman.cs
@@ -53,6 +53,12 @@ namespace ImageSharp.Formats
 
         private static readonly ArrayPool<int> IntBuffer = ArrayPool<int>.Create(JpegDecoderCore.MaxCodeLength, 50);
 
+        /// <summary>
+        /// Initializes the Huffman tree
+        /// </summary>
+        /// <param name="lutSize">Lut size</param>
+        /// <param name="maxNCodes">Max N codes</param>
+        /// <param name="maxCodeLength">Max code length</param>
         public void Init(int lutSize, int maxNCodes, int maxCodeLength)
         {
             this.Lut = UshortBuffer.Rent(1 << lutSize);
@@ -62,6 +68,9 @@ namespace ImageSharp.Formats
             this.Indices = IntBuffer.Rent(maxCodeLength);
         }
 
+        /// <summary>
+        /// Disposes the underlying buffers
+        /// </summary>
         public void Dispose()
         {
             UshortBuffer.Return(this.Lut, true);
diff --git a/src/ImageSharp/Formats/Jpg/Components/MutableSpan.cs b/src/ImageSharp/Formats/Jpg/Components/MutableSpan.cs
index 4b4899849..c43e73614 100644
--- a/src/ImageSharp/Formats/Jpg/Components/MutableSpan.cs
+++ b/src/ImageSharp/Formats/Jpg/Components/MutableSpan.cs
@@ -5,7 +5,6 @@
 
 namespace ImageSharp.Formats
 {
-    using System.Numerics;
     using System.Runtime.CompilerServices;
 
     /// <summary>
@@ -18,24 +17,48 @@ namespace ImageSharp.Formats
     /// <typeparam name="T"></typeparam>
     internal struct MutableSpan<T>
     {
+        /// <summary>
+        /// Data
+        /// </summary>
         public T[] Data;
 
+        /// <summary>
+        /// Offset
+        /// </summary>
         public int Offset;
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MutableSpan{T}"/> struct.
+        /// </summary>
+        /// <param name="size">The size of the span</param>
+        /// <param name="offset">The offset (defaults to 0)</param>
         public MutableSpan(int size, int offset = 0)
         {
             this.Data = new T[size];
             this.Offset = offset;
         }
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MutableSpan{T}"/> struct.
+        /// </summary>
+        /// <param name="data">The data</param>
+        /// <param name="offset">The offset (defaults to 0)</param>
         public MutableSpan(T[] data, int offset = 0)
         {
             this.Data = data;
             this.Offset = offset;
         }
 
+        /// <summary>
+        /// Gets the total count of data
+        /// </summary>
         public int TotalCount => this.Data.Length - this.Offset;
 
+        /// <summary>
+        /// Index into the data
+        /// </summary>
+        /// <param name="idx">The data</param>
+        /// <returns>The value at the specified index</returns>
         public T this[int idx]
         {
             [MethodImpl(MethodImplOptions.AggressiveInlining)]
@@ -53,57 +76,25 @@ namespace ImageSharp.Formats
 
         public static implicit operator MutableSpan<T>(T[] data) => new MutableSpan<T>(data, 0);
 
+        /// <summary>
+        /// Slice the data
+        /// </summary>
+        /// <param name="offset">The offset</param>
+        /// <returns>The new <see cref="MutableSpan{T}"/></returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public MutableSpan<T> Slice(int offset)
         {
             return new MutableSpan<T>(this.Data, this.Offset + offset);
         }
 
+        /// <summary>
+        /// Add to the offset
+        /// </summary>
+        /// <param name="offset">The additional offset</param>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public void AddOffset(int offset)
         {
             this.Offset += offset;
         }
     }
-
-    internal static class MutableSpanExtensions
-    {
-        public static MutableSpan<T> Slice<T>(this T[] array, int offset) => new MutableSpan<T>(array, offset);
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static void SaveTo(this MutableSpan<float> data, ref Vector4 v)
-        {
-            v.X = data[0];
-            v.Y = data[1];
-            v.Z = data[2];
-            v.W = data[3];
-        }
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static void SaveTo(this MutableSpan<int> data, ref Vector4 v)
-        {
-            v.X = data[0];
-            v.Y = data[1];
-            v.Z = data[2];
-            v.W = data[3];
-        }
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static void LoadFrom(this MutableSpan<float> data, ref Vector4 v)
-        {
-            data[0] = v.X;
-            data[1] = v.Y;
-            data[2] = v.Z;
-            data[3] = v.W;
-        }
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static void LoadFrom(this MutableSpan<int> data, ref Vector4 v)
-        {
-            data[0] = (int)v.X;
-            data[1] = (int)v.Y;
-            data[2] = (int)v.Z;
-            data[3] = (int)v.W;
-        }
-    }
 }
\ No newline at end of file
diff --git a/src/ImageSharp/Formats/Jpg/Components/MutableSpanExtensions.cs b/src/ImageSharp/Formats/Jpg/Components/MutableSpanExtensions.cs
new file mode 100644
index 000000000..42edcd3c4
--- /dev/null
+++ b/src/ImageSharp/Formats/Jpg/Components/MutableSpanExtensions.cs
@@ -0,0 +1,81 @@
+// <copyright file="MutableSpanExtensions.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp.Formats.Jpg.Components
+{
+    using System.Numerics;
+    using System.Runtime.CompilerServices;
+
+    /// <summary>
+    /// MutableSpan Extensions
+    /// </summary>
+    internal static class MutableSpanExtensions
+    {
+        /// <summary>
+        /// Slice <see cref="MutableSpan{T}"/>
+        /// </summary>
+        /// <typeparam name="T">The type of the data in the span</typeparam>
+        /// <param name="array">The data array</param>
+        /// <param name="offset">The offset</param>
+        /// <returns>The new <see cref="MutableSpan{T}"/></returns>
+        public static MutableSpan<T> Slice<T>(this T[] array, int offset) => new MutableSpan<T>(array, offset);
+
+        /// <summary>
+        /// Save to a Vector4
+        /// </summary>
+        /// <param name="data">The data</param>
+        /// <param name="v">The vector to save to</param>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static void SaveTo(this MutableSpan<float> data, ref Vector4 v)
+        {
+            v.X = data[0];
+            v.Y = data[1];
+            v.Z = data[2];
+            v.W = data[3];
+        }
+
+        /// <summary>
+        /// Save to a Vector4
+        /// </summary>
+        /// <param name="data">The data</param>
+        /// <param name="v">The vector to save to</param>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static void SaveTo(this MutableSpan<int> data, ref Vector4 v)
+        {
+            v.X = data[0];
+            v.Y = data[1];
+            v.Z = data[2];
+            v.W = data[3];
+        }
+
+        /// <summary>
+        /// Load from Vector4
+        /// </summary>
+        /// <param name="data">The data</param>
+        /// <param name="v">The vector to load from</param>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static void LoadFrom(this MutableSpan<float> data, ref Vector4 v)
+        {
+            data[0] = v.X;
+            data[1] = v.Y;
+            data[2] = v.Z;
+            data[3] = v.W;
+        }
+
+        /// <summary>
+        /// Load from Vector4
+        /// </summary>
+        /// <param name="data">The data</param>
+        /// <param name="v">The vector to load from</param>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static void LoadFrom(this MutableSpan<int> data, ref Vector4 v)
+        {
+            data[0] = (int)v.X;
+            data[1] = (int)v.Y;
+            data[2] = (int)v.Z;
+            data[3] = (int)v.W;
+        }
+    }
+}
diff --git a/src/ImageSharp/Formats/Jpg/JpegDecoderCore.cs b/src/ImageSharp/Formats/Jpg/JpegDecoderCore.cs
index d93a12464..1fe222530 100644
--- a/src/ImageSharp/Formats/Jpg/JpegDecoderCore.cs
+++ b/src/ImageSharp/Formats/Jpg/JpegDecoderCore.cs
@@ -449,6 +449,9 @@ namespace ImageSharp.Formats
             }
         }
 
+        /// <summary>
+        /// Dispose
+        /// </summary>
         public void Dispose()
         {
             for (int i = 0; i < this.huffmanTrees.Length; i++)