diff --git a/BuildCommand.cs b/BuildCommand.cs
index f962c6b..85c7315 100644
--- a/BuildCommand.cs
+++ b/BuildCommand.cs
@@ -27,17 +27,17 @@ public class BuildCommand : ICommand
         }
 ;
         var lines = await File.ReadAllLinesAsync(path);
-        var source = ScriptHelper.LinesToString(lines);
+        var source = lines.JoinLines();
 
         if (Verbose)
         {
             await console.Output.WriteLineAsync($"Compiling: {path}");
         }
 
-        var counter = ScriptHelper.CharacterCounter(1259, source);
+        var counter = source.ExceedsLengthLimit(1259);
 
-        if (counter.checker)
-            await console.Output.WriteAsync(counter.output);
+        if (counter.IsOverLimit)
+            await console.Output.WriteAsync(counter.WarningMessage);
 
 
         var qrGenerator = new QRCodeGenerator();
diff --git a/GlobalUsing.cs b/GlobalUsing.cs
index 45c2ce0..5cd5a46 100644
--- a/GlobalUsing.cs
+++ b/GlobalUsing.cs
@@ -1,4 +1,5 @@
 global using Glyph;
+global using Glyph.Extensions;
 global using QRCoder;
 global using CliFx;
 global using CliFx.Attributes;
diff --git a/Glyph.csproj b/Glyph.csproj
index fcbcbff..7390897 100644
--- a/Glyph.csproj
+++ b/Glyph.csproj
@@ -6,7 +6,7 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <AssemblyName>glyph</AssemblyName>
     <Nullable>enable</Nullable>
-    <Version>0.2.100</Version>
+    <Version>0.2.103</Version>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/RunCommand.cs b/RunCommand.cs
index f75567d..45e359b 100644
--- a/RunCommand.cs
+++ b/RunCommand.cs
@@ -33,7 +33,7 @@ public class RunCommand : ICommand
         }
 
         lines = await System.IO.File.ReadAllLinesAsync(FilePath);
-        var source = ScriptHelper.LinesToString(lines);
+        var source = lines.JoinLines();
 
         if (!string.IsNullOrEmpty(InputPath))
         {
diff --git a/ScriptHelper.cs b/ScriptHelper.cs
deleted file mode 100644
index 8c049bc..0000000
--- a/ScriptHelper.cs
+++ /dev/null
@@ -1,35 +0,0 @@
-namespace Glyph;
-
-using System.Text;
-
-public static class ScriptHelper
-{
-    /// <summary>
-    /// Encodes a string to Base64.
-    /// </summary>
-    /// <param name="toEncode">The string to encode.</param>
-    /// <returns>The Base64 encoded string.</returns>
-    // https://arcanecode.com/2007/03/21/encoding-strings-to-base64-in-c/
-    static public string EncodeTo64(string toEncode)
-    {
-        byte[] toEncodeAsBytes = System.Text.UnicodeEncoding.Default.GetBytes(toEncode);
-        string returnValue = System.Convert.ToBase64String(toEncodeAsBytes);
-        return returnValue;
-
-    }
-
-    /// <summary>
-    /// Converts an array of strings to a single string with each element separated by a newline.
-    /// </summary>
-    /// <param name="lines">The array of strings to convert.</param>
-    /// <returns>The resulting string.</returns>
-    static public string LinesToString(string[] lines) => string.Join(Environment.NewLine, lines);
-
-    static public (bool checker, string output) CharacterCounter(int limit, string text)
-    {
-        if (text.Length >= limit)
-            return (true, $"Warning source is over {limit:n} characters");
-
-        return (false, string.Empty);
-    }
-}
diff --git a/StringExtensions.cs b/StringExtensions.cs
new file mode 100644
index 0000000..7a947dd
--- /dev/null
+++ b/StringExtensions.cs
@@ -0,0 +1,61 @@
+namespace Glyph.Extensions;
+
+using System.Text;
+
+/// <summary>
+/// Provides extension methods for common string transformations and validations.
+/// </summary>
+public static class StringExtensions
+{
+    /// <summary>
+    /// Encodes the current string instance to Base64 using Unicode encoding.
+    /// </summary>
+    /// <param name="input">The input string to encode.</param>
+    /// <returns>A Base64-encoded version of the input string.</returns>
+    /// <remarks>
+    /// This uses Unicode (UTF-16) encoding, which is standard in .NET strings.
+    /// </remarks>
+    public static string ToBase64(this string input)
+    {
+        if (input is null)
+            throw new ArgumentNullException(nameof(input));
+
+        byte[] bytes = Encoding.Unicode.GetBytes(input);
+        return Convert.ToBase64String(bytes);
+    }
+
+    /// <summary>
+    /// Joins an array of strings into a single string separated by the system's newline.
+    /// </summary>
+    /// <param name="lines">Array of strings to join.</param>
+    /// <returns>A single string composed of all input lines, separated by newlines.</returns>
+    public static string JoinLines(this string[] lines)
+    {
+        if (lines is null)
+            throw new ArgumentNullException(nameof(lines));
+
+        return string.Join(Environment.NewLine, lines);
+    }
+
+    /// <summary>
+    /// Checks if the string exceeds the specified character limit and returns a warning if it does.
+    /// </summary>
+    /// <param name="text">The text to check.</param>
+    /// <param name="limit">The maximum allowed character length.</param>
+    /// <returns>
+    /// A tuple containing a boolean flag and an optional warning message.
+    /// The flag is <c>true</c> if the limit is exceeded, and <c>false</c> otherwise.
+    /// </returns>
+    public static (bool IsOverLimit, string WarningMessage) ExceedsLengthLimit(this string text, int limit)
+    {
+        if (text is null)
+            throw new ArgumentNullException(nameof(text));
+
+        if (limit < 0)
+            throw new ArgumentOutOfRangeException(nameof(limit), "Limit must be non-negative.");
+
+        return text.Length >= limit
+            ? (true, $"Warning: text is over {limit:n0} characters")
+            : (false, string.Empty);
+    }
+}