From b45670878dc519d5a32920a85706600134b142f2 Mon Sep 17 00:00:00 2001
From: Brian Popow <popow@gmx.de>
Date: Thu, 17 Nov 2022 20:33:53 +0100
Subject: [PATCH] Write padding byte, because the tiff spec requires ifd offset
 to begin on a word boundary.

---
 src/ImageSharp/Formats/Tiff/TiffEncoderCore.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/ImageSharp/Formats/Tiff/TiffEncoderCore.cs b/src/ImageSharp/Formats/Tiff/TiffEncoderCore.cs
index 2013377ed6..94c2253d18 100644
--- a/src/ImageSharp/Formats/Tiff/TiffEncoderCore.cs
+++ b/src/ImageSharp/Formats/Tiff/TiffEncoderCore.cs
@@ -244,6 +244,12 @@ internal sealed class TiffEncoderCore : IImageEncoderInternals
         entriesCollector.ProcessFrameInfo(frame, imageMetadata);
         entriesCollector.ProcessImageFormat(this);
 
+        if (writer.Position % 2 != 0)
+        {
+            // Write padding byte, because the tiff spec requires ifd offset to begin on a word boundary.
+            writer.Write(0);
+        }
+
         this.frameMarkers.Add((ifdOffset, (uint)writer.Position));
 
         return this.WriteIfd(writer, entriesCollector.Entries);