diff --git a/Paragraphs/Change-font-size/.NET/Change-font-size.sln b/Paragraphs/Change-font-size/.NET/Change-font-size.sln
new file mode 100644
index 00000000..fb31f389
--- /dev/null
+++ b/Paragraphs/Change-font-size/.NET/Change-font-size.sln
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.11.35327.3
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Change-font-size", "Change-font-size\Change-font-size.csproj", "{3CCAD0D1-6179-416B-9D42-CBA03AFA6860}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{3CCAD0D1-6179-416B-9D42-CBA03AFA6860}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3CCAD0D1-6179-416B-9D42-CBA03AFA6860}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3CCAD0D1-6179-416B-9D42-CBA03AFA6860}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3CCAD0D1-6179-416B-9D42-CBA03AFA6860}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {6FE8F7C4-D529-497F-B14B-6FA99BBD9F3A}
+	EndGlobalSection
+EndGlobal
diff --git a/Paragraphs/Change-font-size/.NET/Change-font-size/Change-font-size.csproj b/Paragraphs/Change-font-size/.NET/Change-font-size/Change-font-size.csproj
new file mode 100644
index 00000000..c208ef13
--- /dev/null
+++ b/Paragraphs/Change-font-size/.NET/Change-font-size/Change-font-size.csproj
@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>Change_font_size</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Syncfusion.DocIO.Net.Core" Version="*" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Update="Data\Template.docx">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+    <None Update="Output\.gitkeep">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+</Project>
diff --git a/Paragraphs/Change-font-size/.NET/Change-font-size/Data/Template.docx b/Paragraphs/Change-font-size/.NET/Change-font-size/Data/Template.docx
new file mode 100644
index 00000000..34913a91
Binary files /dev/null and b/Paragraphs/Change-font-size/.NET/Change-font-size/Data/Template.docx differ
diff --git a/Paragraphs/Change-font-size/.NET/Change-font-size/Output/.gitkeep b/Paragraphs/Change-font-size/.NET/Change-font-size/Output/.gitkeep
new file mode 100644
index 00000000..5f282702
--- /dev/null
+++ b/Paragraphs/Change-font-size/.NET/Change-font-size/Output/.gitkeep
@@ -0,0 +1 @@
+
\ No newline at end of file
diff --git a/Paragraphs/Change-font-size/.NET/Change-font-size/Program.cs b/Paragraphs/Change-font-size/.NET/Change-font-size/Program.cs
new file mode 100644
index 00000000..5bea56d3
--- /dev/null
+++ b/Paragraphs/Change-font-size/.NET/Change-font-size/Program.cs
@@ -0,0 +1,37 @@
+using Syncfusion.DocIO.DLS;  
+using Syncfusion.DocIO;      
+
+namespace Change_font_size   
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            // Open the Word document from the file system for reading.
+            using (FileStream inputStream = new FileStream(Path.GetFullPath(@"Data/Template.docx"), FileMode.Open, FileAccess.Read))
+            {
+                // Initialize the WordDocument object with the input stream.
+                using (WordDocument document = new WordDocument(inputStream, FormatType.Automatic))
+                {
+                    // Find all text ranges (instances of text) in the document
+                    List<Entity> textRanges = document.FindAllItemsByProperty(EntityType.TextRange, null, null);
+
+                    // Loop through each text range and change the font size.
+                    for (int i = 0; i < textRanges.Count; i++)
+                    {
+                        WTextRange textRange = textRanges[i] as WTextRange;
+                        // Set font size to 15.
+                        textRange.CharacterFormat.FontSize = 15;  
+                    }
+
+                    // Create an output stream to save the modified document.
+                    using (FileStream outputStream = new FileStream(Path.GetFullPath(@"Output/Result.docx"), FileMode.OpenOrCreate, FileAccess.ReadWrite))
+                    {
+                        // Save the modified document in DOCX format.
+                        document.Save(outputStream, FormatType.Docx);
+                    }
+                }
+            }
+        }
+    }
+}