From 38702acdf284c712ab59e3a8b6f2287c4ae2faba Mon Sep 17 00:00:00 2001
From: Alexander Vinnikov <a.vinnikov@revizto.com>
Date: Fri, 17 Apr 2026 11:12:26 +0200
Subject: [PATCH 1/2] support netstandard2.1

---
 src/UglyToad.PdfPig.Core/UglyToad.PdfPig.Core.csproj          | 2 +-
 .../UglyToad.PdfPig.DocumentLayoutAnalysis.csproj             | 2 +-
 src/UglyToad.PdfPig.Fonts/UglyToad.PdfPig.Fonts.csproj        | 2 +-
 .../UglyToad.PdfPig.Tokenization.csproj                       | 2 +-
 src/UglyToad.PdfPig.Tokens/UglyToad.PdfPig.Tokens.csproj      | 2 +-
 src/UglyToad.PdfPig/UglyToad.PdfPig.csproj                    | 4 ++--
 6 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/src/UglyToad.PdfPig.Core/UglyToad.PdfPig.Core.csproj b/src/UglyToad.PdfPig.Core/UglyToad.PdfPig.Core.csproj
index 69b008ff4..effd274cb 100644
--- a/src/UglyToad.PdfPig.Core/UglyToad.PdfPig.Core.csproj
+++ b/src/UglyToad.PdfPig.Core/UglyToad.PdfPig.Core.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net462;net471;net6.0;net8.0;net9.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netstandard2.1;net462;net471;net6.0;net8.0;net9.0</TargetFrameworks>
     <LangVersion>12</LangVersion>
     <Version>0.1.14</Version>
     <IsTestProject>False</IsTestProject>
diff --git a/src/UglyToad.PdfPig.DocumentLayoutAnalysis/UglyToad.PdfPig.DocumentLayoutAnalysis.csproj b/src/UglyToad.PdfPig.DocumentLayoutAnalysis/UglyToad.PdfPig.DocumentLayoutAnalysis.csproj
index ffebab4db..7f9bf48fe 100644
--- a/src/UglyToad.PdfPig.DocumentLayoutAnalysis/UglyToad.PdfPig.DocumentLayoutAnalysis.csproj
+++ b/src/UglyToad.PdfPig.DocumentLayoutAnalysis/UglyToad.PdfPig.DocumentLayoutAnalysis.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net462;net471;net6.0;net8.0;net9.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netstandard2.1;net462;net471;net6.0;net8.0;net9.0</TargetFrameworks>
     <LangVersion>12</LangVersion>
     <Version>0.1.14</Version>
     <IsTestProject>False</IsTestProject>
diff --git a/src/UglyToad.PdfPig.Fonts/UglyToad.PdfPig.Fonts.csproj b/src/UglyToad.PdfPig.Fonts/UglyToad.PdfPig.Fonts.csproj
index 3389f621b..0fb775d4d 100644
--- a/src/UglyToad.PdfPig.Fonts/UglyToad.PdfPig.Fonts.csproj
+++ b/src/UglyToad.PdfPig.Fonts/UglyToad.PdfPig.Fonts.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net462;net471;net6.0;net8.0;net9.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netstandard2.1;net462;net471;net6.0;net8.0;net9.0</TargetFrameworks>
     <LangVersion>12</LangVersion>
     <Version>0.1.14</Version>
     <IsTestProject>False</IsTestProject>
diff --git a/src/UglyToad.PdfPig.Tokenization/UglyToad.PdfPig.Tokenization.csproj b/src/UglyToad.PdfPig.Tokenization/UglyToad.PdfPig.Tokenization.csproj
index 025ef55bc..30d32321c 100644
--- a/src/UglyToad.PdfPig.Tokenization/UglyToad.PdfPig.Tokenization.csproj
+++ b/src/UglyToad.PdfPig.Tokenization/UglyToad.PdfPig.Tokenization.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net462;net471;net6.0;net8.0;net9.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netstandard2.1;net462;net471;net6.0;net8.0;net9.0</TargetFrameworks>
     <LangVersion>12</LangVersion>
     <Version>0.1.14</Version>
     <IsTestProject>False</IsTestProject>
diff --git a/src/UglyToad.PdfPig.Tokens/UglyToad.PdfPig.Tokens.csproj b/src/UglyToad.PdfPig.Tokens/UglyToad.PdfPig.Tokens.csproj
index 357f7ef99..4e985fbb7 100644
--- a/src/UglyToad.PdfPig.Tokens/UglyToad.PdfPig.Tokens.csproj
+++ b/src/UglyToad.PdfPig.Tokens/UglyToad.PdfPig.Tokens.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net462;net471;net6.0;net8.0;net9.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netstandard2.1;net462;net471;net6.0;net8.0;net9.0</TargetFrameworks>
     <LangVersion>12</LangVersion>
     <Version>0.1.14</Version>
     <IsTestProject>False</IsTestProject>
diff --git a/src/UglyToad.PdfPig/UglyToad.PdfPig.csproj b/src/UglyToad.PdfPig/UglyToad.PdfPig.csproj
index 2f9091743..e3e9dbef6 100644
--- a/src/UglyToad.PdfPig/UglyToad.PdfPig.csproj
+++ b/src/UglyToad.PdfPig/UglyToad.PdfPig.csproj
@@ -1,6 +1,6 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net462;net471;net6.0;net8.0;net9.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netstandard2.1;net462;net471;net6.0;net8.0;net9.0</TargetFrameworks>
     <LangVersion>12</LangVersion>
     <Version>0.1.14</Version>
     <IsTestProject>False</IsTestProject>

From 514d3665d05709611c9bdb8d3a4022567e8f760a Mon Sep 17 00:00:00 2001
From: Alexander Vinnikov <a.vinnikov@revizto.com>
Date: Fri, 17 Apr 2026 12:48:18 +0200
Subject: [PATCH 2/2] reference ms.bcl.hashcode package for netstandard2.1

---
 src/UglyToad.PdfPig.Core/UglyToad.PdfPig.Core.csproj | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/UglyToad.PdfPig.Core/UglyToad.PdfPig.Core.csproj b/src/UglyToad.PdfPig.Core/UglyToad.PdfPig.Core.csproj
index effd274cb..4731ffcc2 100644
--- a/src/UglyToad.PdfPig.Core/UglyToad.PdfPig.Core.csproj
+++ b/src/UglyToad.PdfPig.Core/UglyToad.PdfPig.Core.csproj
@@ -13,7 +13,7 @@
   <ItemGroup Condition="'$(TargetFramework)'=='net462'">
     <PackageReference Include="System.ValueTuple" Version="4.5.0" />
   </ItemGroup>
-  <ItemGroup Condition="'$(TargetFramework)'=='netstandard2.0' or '$(TargetFramework)'=='net462' OR '$(TargetFramework)'=='net471'">
+  <ItemGroup Condition="'$(TargetFramework)'=='netstandard2.0' or '$(TargetFramework)'=='netstandard2.1' or '$(TargetFramework)'=='net462' OR '$(TargetFramework)'=='net471'">
     <PackageReference Include="Microsoft.Bcl.HashCode" Version="6.0.0" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)'=='netstandard2.0' or '$(TargetFramework)'=='net462' or '$(TargetFramework)'=='net471'">