diff --git a/src/ImageSharp/Formats/Tiff/TiffDecoderOptionsParser.cs b/src/ImageSharp/Formats/Tiff/TiffDecoderOptionsParser.cs
index 5a5c2b3e51..db349b8b69 100644
--- a/src/ImageSharp/Formats/Tiff/TiffDecoderOptionsParser.cs
+++ b/src/ImageSharp/Formats/Tiff/TiffDecoderOptionsParser.cs
@@ -25,20 +25,22 @@ internal static class TiffDecoderOptionsParser
     /// <returns>True, if the image uses tiles. Otherwise the images has strip's.</returns>
     public static bool VerifyAndParse(this TiffDecoderCore options, ExifProfile exifProfile, TiffFrameMetadata frameMetadata)
     {
-        IExifValue extraSamplesExifValue = exifProfile.GetValueInternal(ExifTag.ExtraSamples);
-        if (extraSamplesExifValue is not null)
+        if (exifProfile.TryGetValue(ExifTag.ExtraSamples, out IExifValue<ushort[]> samples))
         {
-            short[] extraSamples = (short[])extraSamplesExifValue.GetValue();
-            if (extraSamples.Length != 1)
+            // We only support a single sample pertaining to alpha data.
+            // Other information is discarded.
+            TiffExtraSampleType sampleType = (TiffExtraSampleType)samples.Value[0];
+            if (sampleType is TiffExtraSampleType.CorelDrawUnassociatedAlphaData)
             {
-                TiffThrowHelper.ThrowNotSupported("ExtraSamples is only supported with one extra sample for alpha data.");
+                // According to libtiff, this CorelDRAW-specific value indicates unassociated alpha.
+                // Patch required for compatibility with malformed CorelDRAW-generated TIFFs.
+                // https://libtiff.gitlab.io/libtiff/releases/v3.9.0beta.html
+                sampleType = TiffExtraSampleType.UnassociatedAlphaData;
             }
 
-            TiffExtraSampleType extraSamplesType = (TiffExtraSampleType)extraSamples[0];
-            options.ExtraSamplesType = extraSamplesType;
-            if (extraSamplesType is not (TiffExtraSampleType.UnassociatedAlphaData or TiffExtraSampleType.AssociatedAlphaData))
+            if (sampleType is (TiffExtraSampleType.UnassociatedAlphaData or TiffExtraSampleType.AssociatedAlphaData))
             {
-                TiffThrowHelper.ThrowNotSupported("Decoding Tiff images with ExtraSamples is not supported with UnspecifiedData.");
+                options.ExtraSamplesType = sampleType;
             }
         }
 
diff --git a/src/ImageSharp/Formats/Tiff/TiffExtraSampleType.cs b/src/ImageSharp/Formats/Tiff/TiffExtraSampleType.cs
index 484fc993b0..72d56e2c38 100644
--- a/src/ImageSharp/Formats/Tiff/TiffExtraSampleType.cs
+++ b/src/ImageSharp/Formats/Tiff/TiffExtraSampleType.cs
@@ -22,5 +22,11 @@ internal enum TiffExtraSampleType
     /// The extra data is unassociated alpha data is transparency information that logically exists independent of an image;
     /// it is commonly called a soft matte.
     /// </summary>
-    UnassociatedAlphaData = 2
+    UnassociatedAlphaData = 2,
+
+    /// <summary>
+    /// A CorelDRAW-specific value observed in damaged files, indicating unassociated alpha.
+    /// Not part of the official TIFF specification; patched in ImageSharp for compatibility.
+    /// </summary>
+    CorelDrawUnassociatedAlphaData = 999
 }
diff --git a/src/ImageSharp/Formats/Webp/Lossless/BackwardReferenceEncoder.cs b/src/ImageSharp/Formats/Webp/Lossless/BackwardReferenceEncoder.cs
index 2e7dd722fc..defa63ed06 100644
--- a/src/ImageSharp/Formats/Webp/Lossless/BackwardReferenceEncoder.cs
+++ b/src/ImageSharp/Formats/Webp/Lossless/BackwardReferenceEncoder.cs
@@ -149,9 +149,8 @@ private static int CalculateBestCacheSize(
         }
 
         // Find the cacheBits giving the lowest entropy.
-        for (int idx = 0; idx < refs.Refs.Count; idx++)
+        foreach (PixOrCopy v in refs)
         {
-            PixOrCopy v = refs.Refs[idx];
             if (v.IsLiteral())
             {
                 uint pix = bgra[pos++];
@@ -387,7 +386,7 @@ private static void BackwardReferencesHashChainFollowChosenPath(ReadOnlySpan<uin
             colorCache = new ColorCache(cacheBits);
         }
 
-        backwardRefs.Refs.Clear();
+        backwardRefs.Clear();
         for (int ix = 0; ix < chosenPathSize; ix++)
         {
             int len = chosenPath[ix];
@@ -479,7 +478,7 @@ private static void BackwardReferencesLz77(int xSize, int ySize, ReadOnlySpan<ui
             colorCache = new ColorCache(cacheBits);
         }
 
-        refs.Refs.Clear();
+        refs.Clear();
         for (int i = 0; i < pixCount;)
         {
             // Alternative #1: Code the pixels starting at 'i' using backward reference.
@@ -734,7 +733,7 @@ private static void BackwardReferencesRle(int xSize, int ySize, ReadOnlySpan<uin
             colorCache = new ColorCache(cacheBits);
         }
 
-        refs.Refs.Clear();
+        refs.Clear();
 
         // Add first pixel as literal.
         AddSingleLiteral(bgra[0], useColorCache, colorCache, refs);
@@ -780,9 +779,8 @@ private static void BackwardRefsWithLocalCache(ReadOnlySpan<uint> bgra, int cach
     {
         int pixelIndex = 0;
         ColorCache colorCache = new ColorCache(cacheBits);
-        for (int idx = 0; idx < refs.Refs.Count; idx++)
+        foreach (ref PixOrCopy v in refs)
         {
-            PixOrCopy v = refs.Refs[idx];
             if (v.IsLiteral())
             {
                 uint bgraLiteral = v.BgraOrDistance;
@@ -790,9 +788,7 @@ private static void BackwardRefsWithLocalCache(ReadOnlySpan<uint> bgra, int cach
                 if (ix >= 0)
                 {
                     // Color cache contains bgraLiteral
-                    v.Mode = PixOrCopyMode.CacheIdx;
-                    v.BgraOrDistance = (uint)ix;
-                    v.Len = 1;
+                    v = PixOrCopy.CreateCacheIdx(ix);
                 }
                 else
                 {
@@ -814,14 +810,13 @@ private static void BackwardRefsWithLocalCache(ReadOnlySpan<uint> bgra, int cach
 
     private static void BackwardReferences2DLocality(int xSize, Vp8LBackwardRefs refs)
     {
-        using List<PixOrCopy>.Enumerator c = refs.Refs.GetEnumerator();
-        while (c.MoveNext())
+        foreach (ref PixOrCopy v in refs)
         {
-            if (c.Current.IsCopy())
+            if (v.IsCopy())
             {
-                int dist = (int)c.Current.BgraOrDistance;
+                int dist = (int)v.BgraOrDistance;
                 int transformedDist = DistanceToPlaneCode(xSize, dist);
-                c.Current.BgraOrDistance = (uint)transformedDist;
+                v = PixOrCopy.CreateCopy((uint)transformedDist, v.Len);
             }
         }
     }
diff --git a/src/ImageSharp/Formats/Webp/Lossless/CostModel.cs b/src/ImageSharp/Formats/Webp/Lossless/CostModel.cs
index beebc48abc..c6131bc2aa 100644
--- a/src/ImageSharp/Formats/Webp/Lossless/CostModel.cs
+++ b/src/ImageSharp/Formats/Webp/Lossless/CostModel.cs
@@ -40,9 +40,9 @@ public void Build(int xSize, int cacheBits, Vp8LBackwardRefs backwardRefs)
         using OwnedVp8LHistogram histogram = OwnedVp8LHistogram.Create(this.memoryAllocator, cacheBits);
 
         // The following code is similar to HistogramCreate but converts the distance to plane code.
-        for (int i = 0; i < backwardRefs.Refs.Count; i++)
+        foreach (PixOrCopy v in backwardRefs)
         {
-            histogram.AddSinglePixOrCopy(backwardRefs.Refs[i], true, xSize);
+            histogram.AddSinglePixOrCopy(in v, true, xSize);
         }
 
         ConvertPopulationCountTableToBitEstimates(histogram.NumCodes(), histogram.Literal, this.Literal);
diff --git a/src/ImageSharp/Formats/Webp/Lossless/HistogramEncoder.cs b/src/ImageSharp/Formats/Webp/Lossless/HistogramEncoder.cs
index 3a96362cfd..595332eeef 100644
--- a/src/ImageSharp/Formats/Webp/Lossless/HistogramEncoder.cs
+++ b/src/ImageSharp/Formats/Webp/Lossless/HistogramEncoder.cs
@@ -109,12 +109,11 @@ private static void HistogramBuild(
     {
         int x = 0, y = 0;
         int histoXSize = LosslessUtils.SubSampleSize(xSize, histoBits);
-        using List<PixOrCopy>.Enumerator backwardRefsEnumerator = backwardRefs.Refs.GetEnumerator();
-        while (backwardRefsEnumerator.MoveNext())
+
+        foreach (PixOrCopy v in backwardRefs)
         {
-            PixOrCopy v = backwardRefsEnumerator.Current;
             int ix = ((y >> histoBits) * histoXSize) + (x >> histoBits);
-            histograms[ix].AddSinglePixOrCopy(v, false);
+            histograms[ix].AddSinglePixOrCopy(in v, false);
             x += v.Len;
             while (x >= xSize)
             {
@@ -465,7 +464,7 @@ private static bool HistogramCombineStochastic(Vp8LHistogramSet histograms, int
                     }
                 }
 
-                HistoListUpdateHead(histoPriorityList, p);
+                HistoListUpdateHead(histoPriorityList, p, j);
                 j++;
             }
 
@@ -525,7 +524,7 @@ private static void HistogramCombineGreedy(Vp8LHistogramSet histograms)
                 }
                 else
                 {
-                    HistoListUpdateHead(histoPriorityList, p);
+                    HistoListUpdateHead(histoPriorityList, p, i);
                     i++;
                 }
             }
@@ -647,7 +646,7 @@ private static double HistoPriorityListPush(
 
         histoList.Add(pair);
 
-        HistoListUpdateHead(histoList, pair);
+        HistoListUpdateHead(histoList, pair, histoList.Count - 1);
 
         return pair.CostDiff;
     }
@@ -674,13 +673,11 @@ private static void HistoListUpdatePair(
     /// <summary>
     /// Check whether a pair in the list should be updated as head or not.
     /// </summary>
-    private static void HistoListUpdateHead(List<HistogramPair> histoList, HistogramPair pair)
+    private static void HistoListUpdateHead(List<HistogramPair> histoList, HistogramPair pair, int idx)
     {
         if (pair.CostDiff < histoList[0].CostDiff)
         {
-            // Replace the best pair.
-            int oldIdx = histoList.IndexOf(pair);
-            histoList[oldIdx] = histoList[0];
+            histoList[idx] = histoList[0];
             histoList[0] = pair;
         }
     }
diff --git a/src/ImageSharp/Formats/Webp/Lossless/PixOrCopy.cs b/src/ImageSharp/Formats/Webp/Lossless/PixOrCopy.cs
index d6b10ada55..bb8ce18aad 100644
--- a/src/ImageSharp/Formats/Webp/Lossless/PixOrCopy.cs
+++ b/src/ImageSharp/Formats/Webp/Lossless/PixOrCopy.cs
@@ -6,37 +6,24 @@
 namespace SixLabors.ImageSharp.Formats.Webp.Lossless;
 
 [DebuggerDisplay("Mode: {Mode}, Len: {Len}, BgraOrDistance: {BgraOrDistance}")]
-internal sealed class PixOrCopy
+internal readonly struct PixOrCopy
 {
-    public PixOrCopyMode Mode { get; set; }
-
-    public ushort Len { get; set; }
-
-    public uint BgraOrDistance { get; set; }
-
-    public static PixOrCopy CreateCacheIdx(int idx) =>
-        new PixOrCopy
-        {
-            Mode = PixOrCopyMode.CacheIdx,
-            BgraOrDistance = (uint)idx,
-            Len = 1
-        };
-
-    public static PixOrCopy CreateLiteral(uint bgra) =>
-        new PixOrCopy
-        {
-            Mode = PixOrCopyMode.Literal,
-            BgraOrDistance = bgra,
-            Len = 1
-        };
-
-    public static PixOrCopy CreateCopy(uint distance, ushort len) =>
-        new PixOrCopy
+    public readonly PixOrCopyMode Mode;
+    public readonly ushort Len;
+    public readonly uint BgraOrDistance;
+
+    private PixOrCopy(PixOrCopyMode mode, ushort len, uint bgraOrDistance)
     {
-        Mode = PixOrCopyMode.Copy,
-        BgraOrDistance = distance,
-        Len = len
-    };
+        this.Mode = mode;
+        this.Len = len;
+        this.BgraOrDistance = bgraOrDistance;
+    }
+
+    public static PixOrCopy CreateCacheIdx(int idx) => new(PixOrCopyMode.CacheIdx, 1, (uint)idx);
+
+    public static PixOrCopy CreateLiteral(uint bgra) => new(PixOrCopyMode.Literal, 1, bgra);
+
+    public static PixOrCopy CreateCopy(uint distance, ushort len) => new(PixOrCopyMode.Copy, len, distance);
 
     public int Literal(int component) => (int)(this.BgraOrDistance >> (component * 8)) & 0xFF;
 
diff --git a/src/ImageSharp/Formats/Webp/Lossless/Vp8LBackwardRefs.cs b/src/ImageSharp/Formats/Webp/Lossless/Vp8LBackwardRefs.cs
index ace9d62271..634fac5e82 100644
--- a/src/ImageSharp/Formats/Webp/Lossless/Vp8LBackwardRefs.cs
+++ b/src/ImageSharp/Formats/Webp/Lossless/Vp8LBackwardRefs.cs
@@ -1,21 +1,28 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
+using System.Buffers;
+using SixLabors.ImageSharp.Memory;
+
 namespace SixLabors.ImageSharp.Formats.Webp.Lossless;
 
-internal class Vp8LBackwardRefs
+internal class Vp8LBackwardRefs : IDisposable
 {
-    public Vp8LBackwardRefs(int pixels) => this.Refs = new List<PixOrCopy>(pixels);
+    private readonly IMemoryOwner<PixOrCopy> refs;
+    private int count;
+
+    public Vp8LBackwardRefs(MemoryAllocator memoryAllocator, int pixels)
+    {
+        this.refs = memoryAllocator.Allocate<PixOrCopy>(pixels);
+        this.count = 0;
+    }
+
+    public void Add(PixOrCopy pixOrCopy) => this.refs.Memory.Span[this.count++] = pixOrCopy;
 
-    /// <summary>
-    /// Gets or sets the common block-size.
-    /// </summary>
-    public int BlockSize { get; set; }
+    public void Clear() => this.count = 0;
 
-    /// <summary>
-    /// Gets the backward references.
-    /// </summary>
-    public List<PixOrCopy> Refs { get; }
+    public Span<PixOrCopy>.Enumerator GetEnumerator() => this.refs.Slice(0, this.count).GetEnumerator();
 
-    public void Add(PixOrCopy pixOrCopy) => this.Refs.Add(pixOrCopy);
+    /// <inheritdoc/>
+    public void Dispose() => this.refs.Dispose();
 }
diff --git a/src/ImageSharp/Formats/Webp/Lossless/Vp8LEncoder.cs b/src/ImageSharp/Formats/Webp/Lossless/Vp8LEncoder.cs
index 0351798b5f..0ef110bb9f 100644
--- a/src/ImageSharp/Formats/Webp/Lossless/Vp8LEncoder.cs
+++ b/src/ImageSharp/Formats/Webp/Lossless/Vp8LEncoder.cs
@@ -137,14 +137,9 @@ public Vp8LEncoder(
         this.Refs = new Vp8LBackwardRefs[3];
         this.HashChain = new Vp8LHashChain(memoryAllocator, pixelCount);
 
-        // We round the block size up, so we're guaranteed to have at most MaxRefsBlockPerImage blocks used:
-        int refsBlockSize = ((pixelCount - 1) / MaxRefsBlockPerImage) + 1;
         for (int i = 0; i < this.Refs.Length; i++)
         {
-            this.Refs[i] = new Vp8LBackwardRefs(pixelCount)
-            {
-                BlockSize = refsBlockSize < MinBlockSize ? MinBlockSize : refsBlockSize
-            };
+            this.Refs[i] = new Vp8LBackwardRefs(memoryAllocator, pixelCount);
         }
     }
 
@@ -1071,9 +1066,8 @@ private void StoreImageToBitMask(
         int histogramIx = histogramSymbols[0];
         Span<HuffmanTreeCode> codes = huffmanCodes.AsSpan(5 * histogramIx);
 
-        for (int i = 0; i < backwardRefs.Refs.Count; i++)
+        foreach (PixOrCopy v in backwardRefs)
         {
-            PixOrCopy v = backwardRefs.Refs[i];
             if (tileX != (x & tileMask) || tileY != (y & tileMask))
             {
                 tileX = x & tileMask;
@@ -1907,9 +1901,9 @@ public void AllocateTransformBuffer(int width, int height)
     /// </summary>
     public void ClearRefs()
     {
-        foreach (Vp8LBackwardRefs t in this.Refs)
+        foreach (Vp8LBackwardRefs refs in this.Refs)
         {
-            t.Refs.Clear();
+            refs.Clear();
         }
     }
 
@@ -1921,6 +1915,12 @@ public void Dispose()
         this.BgraScratch?.Dispose();
         this.Palette.Dispose();
         this.TransformData?.Dispose();
+
+        foreach (Vp8LBackwardRefs refs in this.Refs)
+        {
+            refs.Dispose();
+        }
+
         this.HashChain.Dispose();
     }
 
diff --git a/src/ImageSharp/Formats/Webp/Lossless/Vp8LHistogram.cs b/src/ImageSharp/Formats/Webp/Lossless/Vp8LHistogram.cs
index f473977908..03bedfe672 100644
--- a/src/ImageSharp/Formats/Webp/Lossless/Vp8LHistogram.cs
+++ b/src/ImageSharp/Formats/Webp/Lossless/Vp8LHistogram.cs
@@ -138,9 +138,9 @@ public void Clear()
     /// <param name="refs">The backward references.</param>
     public void StoreRefs(Vp8LBackwardRefs refs)
     {
-        for (int i = 0; i < refs.Refs.Count; i++)
+        foreach (PixOrCopy v in refs)
         {
-            this.AddSinglePixOrCopy(refs.Refs[i], false);
+            this.AddSinglePixOrCopy(in v, false);
         }
     }
 
@@ -150,7 +150,7 @@ public void StoreRefs(Vp8LBackwardRefs refs)
     /// <param name="v">The token to add.</param>
     /// <param name="useDistanceModifier">Indicates whether to use the distance modifier.</param>
     /// <param name="xSize">xSize is only used when useDistanceModifier is true.</param>
-    public void AddSinglePixOrCopy(PixOrCopy v, bool useDistanceModifier, int xSize = 0)
+    public void AddSinglePixOrCopy(in PixOrCopy v, bool useDistanceModifier, int xSize = 0)
     {
         if (v.IsLiteral())
         {
diff --git a/src/ImageSharp/Metadata/Profiles/Exif/ExifEncodedStringHelpers.cs b/src/ImageSharp/Metadata/Profiles/Exif/ExifEncodedStringHelpers.cs
index e9f46731c8..9833e4e00a 100644
--- a/src/ImageSharp/Metadata/Profiles/Exif/ExifEncodedStringHelpers.cs
+++ b/src/ImageSharp/Metadata/Profiles/Exif/ExifEncodedStringHelpers.cs
@@ -50,22 +50,51 @@ private static Encoding JIS0208Encoding
         _ => UndefinedCodeBytes
     };
 
-    public static Encoding GetEncoding(CharacterCode code) => code switch
+    public static Encoding GetEncoding(CharacterCode code, ByteOrder order) => code switch
     {
         CharacterCode.ASCII => Encoding.ASCII,
         CharacterCode.JIS => JIS0208Encoding,
-        CharacterCode.Unicode => Encoding.Unicode,
+        CharacterCode.Unicode => order is ByteOrder.BigEndian ? Encoding.BigEndianUnicode : Encoding.Unicode,
         CharacterCode.Undefined => Encoding.UTF8,
         _ => Encoding.UTF8
     };
 
-    public static bool TryParse(ReadOnlySpan<byte> buffer, out EncodedString encodedString)
+    public static bool TryParse(ReadOnlySpan<byte> buffer, ByteOrder order, out EncodedString encodedString)
     {
         if (TryDetect(buffer, out CharacterCode code))
         {
-            string text = GetEncoding(code).GetString(buffer[CharacterCodeBytesLength..]);
-            encodedString = new EncodedString(code, text);
-            return true;
+            ReadOnlySpan<byte> textBuffer = buffer[CharacterCodeBytesLength..];
+            if (code == CharacterCode.Unicode && textBuffer.Length >= 2)
+            {
+                // Check BOM
+                if (textBuffer[0] == 0xFF && textBuffer[1] == 0xFE)
+                {
+                    // Little-endian BOM
+                    string text = Encoding.Unicode.GetString(textBuffer[2..]);
+                    encodedString = new EncodedString(code, text);
+                    return true;
+                }
+                else if (textBuffer[0] == 0xFE && textBuffer[1] == 0xFF)
+                {
+                    // Big-endian BOM
+                    string text = Encoding.BigEndianUnicode.GetString(textBuffer[2..]);
+                    encodedString = new EncodedString(code, text);
+                    return true;
+                }
+                else
+                {
+                    // No BOM, use EXIF byte order
+                    string text = GetEncoding(code, order).GetString(textBuffer);
+                    encodedString = new EncodedString(code, text);
+                    return true;
+                }
+            }
+            else
+            {
+                string text = GetEncoding(code, order).GetString(textBuffer);
+                encodedString = new EncodedString(code, text);
+                return true;
+            }
         }
 
         encodedString = default;
@@ -73,14 +102,14 @@ public static bool TryParse(ReadOnlySpan<byte> buffer, out EncodedString encoded
     }
 
     public static uint GetDataLength(EncodedString encodedString) =>
-        (uint)GetEncoding(encodedString.Code).GetByteCount(encodedString.Text) + CharacterCodeBytesLength;
+        (uint)GetEncoding(encodedString.Code, ByteOrder.LittleEndian).GetByteCount(encodedString.Text) + CharacterCodeBytesLength;
 
     public static int Write(EncodedString encodedString, Span<byte> destination)
     {
         GetCodeBytes(encodedString.Code).CopyTo(destination);
 
         string text = encodedString.Text;
-        int count = Write(GetEncoding(encodedString.Code), text, destination[CharacterCodeBytesLength..]);
+        int count = Write(GetEncoding(encodedString.Code, ByteOrder.LittleEndian), text, destination[CharacterCodeBytesLength..]);
 
         return CharacterCodeBytesLength + count;
     }
diff --git a/src/ImageSharp/Metadata/Profiles/Exif/ExifReader.cs b/src/ImageSharp/Metadata/Profiles/Exif/ExifReader.cs
index fe510f250d..d0dcaea9d5 100644
--- a/src/ImageSharp/Metadata/Profiles/Exif/ExifReader.cs
+++ b/src/ImageSharp/Metadata/Profiles/Exif/ExifReader.cs
@@ -90,8 +90,8 @@ internal abstract class BaseExifReader
     private readonly MemoryAllocator? allocator;
     private readonly Stream data;
     private List<ExifTag>? invalidTags;
-
     private List<ulong>? subIfds;
+    private bool isBigEndian;
 
     protected BaseExifReader(Stream stream, MemoryAllocator? allocator)
     {
@@ -116,7 +116,17 @@ protected BaseExifReader(Stream stream, MemoryAllocator? allocator)
     /// </summary>
     public uint ThumbnailOffset { get; protected set; }
 
-    public bool IsBigEndian { get; protected set; }
+    public bool IsBigEndian
+    {
+        get => this.isBigEndian;
+        protected set
+        {
+            this.isBigEndian = value;
+            this.ByteOrder = value ? ByteOrder.BigEndian : ByteOrder.LittleEndian;
+        }
+    }
+
+    protected ByteOrder ByteOrder { get; private set; }
 
     public List<(ulong Offset, ExifDataType DataType, ulong NumberOfComponents, ExifValue Exif)> BigValues { get; } = new();
 
@@ -485,7 +495,14 @@ private void ReadValue64(List<IExifValue> values, Span<byte> offsetBuffer)
 
     private void Add(IList<IExifValue> values, IExifValue exif, object? value)
     {
-        if (!exif.TrySetValue(value))
+        if (exif is ExifEncodedString encodedString)
+        {
+            if (!encodedString.TrySetValue(value, this.ByteOrder))
+            {
+                return;
+            }
+        }
+        else if (!exif.TrySetValue(value))
         {
             return;
         }
diff --git a/src/ImageSharp/Metadata/Profiles/Exif/Tags/ExifTag.cs b/src/ImageSharp/Metadata/Profiles/Exif/Tags/ExifTag.cs
index ea0b8060d5..8ffc2bb738 100644
--- a/src/ImageSharp/Metadata/Profiles/Exif/Tags/ExifTag.cs
+++ b/src/ImageSharp/Metadata/Profiles/Exif/Tags/ExifTag.cs
@@ -23,14 +23,14 @@ public abstract partial class ExifTag : IEquatable<ExifTag>
     /// </summary>
     /// <param name="left">The first <see cref="ExifTag"/> to compare.</param>
     /// <param name="right"> The second <see cref="ExifTag"/> to compare.</param>
-    public static bool operator ==(ExifTag left, ExifTag right) => Equals(left, right);
+    public static bool operator ==(ExifTag? left, ExifTag? right) => left?.Equals(right) == true;
 
     /// <summary>
     /// Determines whether the specified <see cref="ExifTag"/> instances are not considered equal.
     /// </summary>
     /// <param name="left">The first <see cref="ExifTag"/> to compare.</param>
     /// <param name="right"> The second <see cref="ExifTag"/> to compare.</param>
-    public static bool operator !=(ExifTag left, ExifTag right) => !Equals(left, right);
+    public static bool operator !=(ExifTag? left, ExifTag? right) => !(left == right);
 
     /// <inheritdoc/>
     public override bool Equals(object? obj)
diff --git a/src/ImageSharp/Metadata/Profiles/Exif/Tags/ExifTagValue.cs b/src/ImageSharp/Metadata/Profiles/Exif/Tags/ExifTagValue.cs
index 56e8a3ffd1..07dbc51e7d 100644
--- a/src/ImageSharp/Metadata/Profiles/Exif/Tags/ExifTagValue.cs
+++ b/src/ImageSharp/Metadata/Profiles/Exif/Tags/ExifTagValue.cs
@@ -23,14 +23,6 @@ internal enum ExifTagValue
     /// </summary>
     GPSIFDOffset = 0x8825,
 
-    /// <summary>
-    /// Indicates the identification of the Interoperability rule.
-    /// See https://www.awaresystems.be/imaging/tiff/tifftags/privateifd/interoperability/interoperabilityindex.html
-    /// </summary>
-    [ExifTagDescription("R98", "Indicates a file conforming to R98 file specification of Recommended Exif Interoperability Rules (ExifR98) or to DCF basic file stipulated by Design Rule for Camera File System.")]
-    [ExifTagDescription("THM", "Indicates a file conforming to DCF thumbnail file stipulated by Design rule for Camera File System.")]
-    InteroperabilityIndex = 0x0001,
-
     /// <summary>
     /// A general indication of the kind of data contained in this subfile.
     /// See Section 8: Baseline Fields.
diff --git a/src/ImageSharp/Metadata/Profiles/Exif/Values/ExifEncodedString.cs b/src/ImageSharp/Metadata/Profiles/Exif/Values/ExifEncodedString.cs
index cce7cf3e89..14b097f816 100644
--- a/src/ImageSharp/Metadata/Profiles/Exif/Values/ExifEncodedString.cs
+++ b/src/ImageSharp/Metadata/Profiles/Exif/Values/ExifEncodedString.cs
@@ -24,7 +24,7 @@ private ExifEncodedString(ExifEncodedString value)
 
     protected override string StringValue => this.Value.Text;
 
-    public override bool TrySetValue(object? value)
+    public bool TrySetValue(object? value, ByteOrder order)
     {
         if (base.TrySetValue(value))
         {
@@ -38,7 +38,7 @@ public override bool TrySetValue(object? value)
         }
         else if (value is byte[] buffer)
         {
-            if (ExifEncodedStringHelpers.TryParse(buffer, out EncodedString encodedString))
+            if (ExifEncodedStringHelpers.TryParse(buffer, order, out EncodedString encodedString))
             {
                 this.Value = encodedString;
                 return true;
@@ -48,5 +48,8 @@ public override bool TrySetValue(object? value)
         return false;
     }
 
+    public override bool TrySetValue(object? value)
+        => this.TrySetValue(value, ByteOrder.LittleEndian);
+
     public override IExifValue DeepClone() => new ExifEncodedString(this);
 }
diff --git a/tests/ImageSharp.Tests/Formats/Tiff/TiffDecoderTests.cs b/tests/ImageSharp.Tests/Formats/Tiff/TiffDecoderTests.cs
index 839334449d..d66a8def41 100644
--- a/tests/ImageSharp.Tests/Formats/Tiff/TiffDecoderTests.cs
+++ b/tests/ImageSharp.Tests/Formats/Tiff/TiffDecoderTests.cs
@@ -772,4 +772,9 @@ public void TiffDecoder_Decode_Resize<TPixel>(TestImageProvider<TPixel> provider
             testOutputDetails: details,
             appendPixelTypeToFileName: false);
     }
+
+    [Theory]
+    [WithFile(ExtraSamplesUnspecified, PixelTypes.Rgba32)]
+    public void TiffDecoder_CanDecode_ExtraSamplesUnspecified<TPixel>(TestImageProvider<TPixel> provider)
+        where TPixel : unmanaged, IPixel<TPixel> => TestTiffDecoder(provider);
 }
diff --git a/tests/ImageSharp.Tests/Formats/WebP/Vp8LHistogramTests.cs b/tests/ImageSharp.Tests/Formats/WebP/Vp8LHistogramTests.cs
index cfe79e49e6..7777c61084 100644
--- a/tests/ImageSharp.Tests/Formats/WebP/Vp8LHistogramTests.cs
+++ b/tests/ImageSharp.Tests/Formats/WebP/Vp8LHistogramTests.cs
@@ -66,18 +66,14 @@ private static void RunAddVectorTest()
         // All remaining values are expected to be zero.
         literals.AsSpan().CopyTo(expectedLiterals);
 
-        Vp8LBackwardRefs backwardRefs = new(pixelData.Length);
+        MemoryAllocator memoryAllocator = Configuration.Default.MemoryAllocator;
+
+        using Vp8LBackwardRefs backwardRefs = new(memoryAllocator, pixelData.Length);
         for (int i = 0; i < pixelData.Length; i++)
         {
-            backwardRefs.Add(new PixOrCopy()
-            {
-                BgraOrDistance = pixelData[i],
-                Len = 1,
-                Mode = PixOrCopyMode.Literal
-            });
+            backwardRefs.Add(PixOrCopy.CreateLiteral(pixelData[i]));
         }
 
-        MemoryAllocator memoryAllocator = Configuration.Default.MemoryAllocator;
         using OwnedVp8LHistogram histogram0 = OwnedVp8LHistogram.Create(memoryAllocator, backwardRefs, 3);
         using OwnedVp8LHistogram histogram1 = OwnedVp8LHistogram.Create(memoryAllocator, backwardRefs, 3);
         for (int i = 0; i < 5; i++)
diff --git a/tests/ImageSharp.Tests/Formats/WebP/WebpDecoderTests.cs b/tests/ImageSharp.Tests/Formats/WebP/WebpDecoderTests.cs
index d81cd20849..c8d780cc20 100644
--- a/tests/ImageSharp.Tests/Formats/WebP/WebpDecoderTests.cs
+++ b/tests/ImageSharp.Tests/Formats/WebP/WebpDecoderTests.cs
@@ -5,6 +5,7 @@
 using SixLabors.ImageSharp.Formats;
 using SixLabors.ImageSharp.Formats.Webp;
 using SixLabors.ImageSharp.Metadata;
+using SixLabors.ImageSharp.Metadata.Profiles.Exif;
 using SixLabors.ImageSharp.PixelFormats;
 using SixLabors.ImageSharp.Tests.TestUtilities;
 using SixLabors.ImageSharp.Tests.TestUtilities.ImageComparison;
@@ -559,4 +560,22 @@ public void WebpDecoder_CanDecode_Issue2925<TPixel>(TestImageProvider<TPixel> pr
         image.DebugSave(provider);
         image.CompareToOriginal(provider, ReferenceDecoder);
     }
+
+    [Theory]
+    [WithFile(Lossy.Issue2906, PixelTypes.Rgba32)]
+    public void WebpDecoder_CanDecode_Issue2906<TPixel>(TestImageProvider<TPixel> provider)
+        where TPixel : unmanaged, IPixel<TPixel>
+    {
+        using Image<TPixel> image = provider.GetImage(WebpDecoder.Instance);
+
+        ExifProfile exifProfile = image.Metadata.ExifProfile;
+        IExifValue<EncodedString> comment = exifProfile.GetValue(ExifTag.UserComment);
+
+        Assert.NotNull(comment);
+        Assert.Equal(EncodedString.CharacterCode.Unicode, comment.Value.Code);
+        Assert.StartsWith("1girl, pariya, ", comment.Value.Text);
+
+        image.DebugSave(provider);
+        image.CompareToOriginal(provider, ReferenceDecoder);
+    }
 }
diff --git a/tests/ImageSharp.Tests/TestImages.cs b/tests/ImageSharp.Tests/TestImages.cs
index 5a7c2e66ea..e75e7fa482 100644
--- a/tests/ImageSharp.Tests/TestImages.cs
+++ b/tests/ImageSharp.Tests/TestImages.cs
@@ -860,6 +860,7 @@ public static class Lossy
             public const string Issue2801 = "Webp/issues/Issue2801.webp";
             public const string Issue2866 = "Webp/issues/Issue2866.webp";
             public const string Issue2925 = "Webp/issues/Issue2925.webp";
+            public const string Issue2906 = "Webp/issues/Issue2906.webp";
         }
     }
 
@@ -1112,6 +1113,7 @@ public static class Tiff
         public const string Issues2587 = "Tiff/Issues/Issue2587.tiff";
         public const string JpegCompressedGray0000539558 = "Tiff/Issues/JpegCompressedGray-0000539558.tiff";
         public const string Tiled0000023664 = "Tiff/Issues/tiled-0000023664.tiff";
+        public const string ExtraSamplesUnspecified = "Tiff/Issues/ExtraSamplesUnspecified.tif";
 
         public const string SmallRgbDeflate = "Tiff/rgb_small_deflate.tiff";
         public const string SmallRgbLzw = "Tiff/rgb_small_lzw.tiff";
diff --git a/tests/Images/Input/Tiff/Issues/ExtraSamplesUnspecified.tif b/tests/Images/Input/Tiff/Issues/ExtraSamplesUnspecified.tif
new file mode 100644
index 0000000000..b5835c1ed8
--- /dev/null
+++ b/tests/Images/Input/Tiff/Issues/ExtraSamplesUnspecified.tif
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:71d28f17d2d56481faa4d241fae882eae4f8303c70f85bc3759f6a0c2074979e
+size 1426558
diff --git a/tests/Images/Input/Webp/issues/Issue2906.webp b/tests/Images/Input/Webp/issues/Issue2906.webp
new file mode 100644
index 0000000000..0911da0472
--- /dev/null
+++ b/tests/Images/Input/Webp/issues/Issue2906.webp
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:56fe6a91feb9545c0a15966e0f6bc560890b193073c96ae9e39bf387c7e0cbca
+size 157092