diff --git a/NetBarcode.Tests/BarcodeTests.cs b/NetBarcode.Tests/BarcodeTests.cs
index 4914609..c7dd185 100644
--- a/NetBarcode.Tests/BarcodeTests.cs
+++ b/NetBarcode.Tests/BarcodeTests.cs
@@ -1,5 +1,6 @@
 using SixLabors.ImageSharp;
 using SixLabors.ImageSharp.Formats.Png;
+using System.Collections;
 using Xunit.Abstractions;
 
 namespace NetBarcode.Tests
@@ -63,5 +64,81 @@ public void Code39E()
             var expected = "data:image/png;base64,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";
             Assert.Equal(expected, base64);
         }
+
+        [Fact]
+        public void CodeCode128()
+        {
+            var barcode = new Barcode("HELLO!", Type.Code128A, false, 200, 50);
+            var image = barcode.GetImage();
+
+            Assert.NotNull(image);
+
+            var base64 = image.ToBase64String(PngFormat.Instance);
+            _output.WriteLine(base64);
+            var expected = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAMgAAAAyCAYAAAAZUZThAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA90lEQVR4nO3TS4rCQAAAUQPeO8zJ1SwEadKlWQwSeW+Ttn9Roa63h8vJLcvytz0fP2XdxttzXH/Ove4d18eze59n73m39zk/O3t077h/HM/ufV2bvW/v/5nNjd9zb++ZXS+/YZ2Mj66vk/lP7vnG3iNnZ2vv7v90bnbfqf1KIPAvBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQC4Q52RIKpZseR8gAAAABJRU5ErkJggg==";
+            Assert.Equal(expected, base64);
+        }
+
+
+        [Theory, ClassData(typeof(DataAlphanumeric))]
+        public void TestAlphanumericAll(Type _type, string _img64)
+        {
+            var barcode = new Barcode("HELLO!", _type, false, 200, 50);
+            var image = barcode.GetImage();
+
+            Assert.NotNull(image);
+
+            var base64 = image.ToBase64String(PngFormat.Instance);
+            _output.WriteLine(base64);
+            var expected = $"data:image/png;base64,{_img64}";
+            Assert.Equal(expected, base64);
+        }
+
+
+        [Theory, ClassData(typeof(DataNumeric))]
+        public void TestNumericAll(Type _type, string data, string _img64)
+        {
+            var barcode = new Barcode(data, _type, false, 200, 50);
+            var image = barcode.GetImage();
+
+            Assert.NotNull(image);
+
+            var base64 = image.ToBase64String(PngFormat.Instance);
+            _output.WriteLine(base64);
+            var expected = $"data:image/png;base64,{_img64}";
+            Assert.Equal(expected, base64);
+        }
+
+
+
+    }
+    public class DataAlphanumeric : IEnumerable<object[]>
+    {
+        private readonly List<object[]> _data = new List<object[]>
+    {
+        new object[] { Type.Code128,  "iVBORw0KGgoAAAANSUhEUgAAAMgAAAAyCAYAAAAZUZThAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA90lEQVR4nO3TS4rCQAAAUQPeO8zJ1SwEadKlWQwSeW+Ttn9Roa63h8vJLcvytz0fP2XdxttzXH/Ove4d18eze59n73m39zk/O3t077h/HM/ufV2bvW/v/5nNjd9zb++ZXS+/YZ2Mj66vk/lP7vnG3iNnZ2vv7v90bnbfqf1KIPAvBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQC4Q52RIKpZseR8gAAAABJRU5ErkJggg==" },
+        new object[] { Type.Code128A, "iVBORw0KGgoAAAANSUhEUgAAAMgAAAAyCAYAAAAZUZThAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA90lEQVR4nO3TS4rCQAAAUQPeO8zJ1SwEadKlWQwSeW+Ttn9Roa63h8vJLcvytz0fP2XdxttzXH/Ove4d18eze59n73m39zk/O3t077h/HM/ufV2bvW/v/5nNjd9zb++ZXS+/YZ2Mj66vk/lP7vnG3iNnZ2vv7v90bnbfqf1KIPAvBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQC4Q52RIKpZseR8gAAAABJRU5ErkJggg==" },
+        new object[] { Type.Code128B, "iVBORw0KGgoAAAANSUhEUgAAAMgAAAAyCAYAAAAZUZThAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA90lEQVR4nO3TwYqDMAAA0Qr9b9kv360HYQnNVA+lWN67GNIkVXHuvw+3i1uW5We7Ph5l3cbbdZ/fx8/W/p8b9z7bP/ufI2v3+dnes2vH9eN4du74bsbz6p5e3cds7ZXdb99hPTA+MrdO5o+c/Ym1Z/bOfpt9yGff46vzLulbAoG3EAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIhD92RIKpQ/2KsAAAAABJRU5ErkJggg==" },
+        new object[] { Type.Code39E, "iVBORw0KGgoAAAANSUhEUgAAAMgAAAAyCAYAAAAZUZThAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA6klEQVR4nO3T0QqCQBQAUYX+W/ryyodAwqYsjIRzXtrW1ivGnC43wwGM43i+Peq0XM+f8/e1de0t7/Pumfve4/y95j078875tWesd/jqvW753Zb/ZziA03Ac08p6+uD6t2fW9vec98n5PebvMfvvHSkQ+DmBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUC4AhIyzxirHSbCAAAAAElFTkSuQmCC" }
+    };
+
+        public IEnumerator<object[]> GetEnumerator()
+        { return _data.GetEnumerator(); }
+        IEnumerator IEnumerable.GetEnumerator() => throw new NotImplementedException();
+    }
+
+    public class DataNumeric : IEnumerable<object[]>
+    {
+        private readonly List<object[]> _data = new()
+        {
+        new object[] { Type.EAN8,"1234567", "iVBORw0KGgoAAAANSUhEUgAAAMgAAAAyCAYAAAAZUZThAAAACXBIWXMAAA7EAAAOxAGVKw4bAAABAklEQVR4nO3TQW6DMBQA0SDlYOnJcrT2Zq3XEYxjFimL9ySEMA7+ijT33+H2z7Zt+xq3x7h+xjjfr897+2bvV9ePzj+67815dM7KeSvfrTnPzDf7v2bvZ/Mc/f7snJ9wv13DY1zPeN5bn71fXX9O1mf76pyV81a+W3Oeme/dfWfneXeu2fkfc5VA4JIEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBAJBIBAEAkEgEAQCQSAQBALhD3XrkiU5+0kOAAAAAElFTkSuQmCC" },
+        new object[] { Type.EAN13,"1234567890123",   "iVBORw0KGgoAAAANSUhEUgAAAMgAAAAyCAYAAAAZUZThAAAACXBIWXMAAA7EAAAOxAGVKw4bAAABEUlEQVR4nO3TXWqDQBhA0RGysHZlWVq7s9a+lZC5jsS8nQNBouPnD97bz2482Lbtc9987L/v/fDX4//Zumf7Z3Nm29XrrZw3u4+j5x0Tr76X1TnvuM648D2vPMd48bs4O+/K9/9/7W0897f4Hv/P7L8f7D9adzS3zpvdR80tNf/MvKM577jOle955T5f/S7OzlvZPzs+XT8LBBgCgSQQCAKBIBAIAoEgEAgCgSAQCAKBIBAIAoEgEAgCgSAQCAKBIBAIAoEgEAgCgSAQCAKBIBAIAoEgEAgCgSAQCAKBIBAIAoEgEAgCgSAQCAKBIBAIAoEgEAgCgSAQCAKBIBAIAoEgEAgCgSAQCAKBIBAIAoHwCxgmx5hQC0m8AAAAAElFTkSuQmCC" },
+        new object[] { Type.Code93, "1234567890123", "iVBORw0KGgoAAAANSUhEUgAAAMgAAAAyCAYAAAAZUZThAAAACXBIWXMAAA7EAAAOxAGVKw4bAAABB0lEQVR4nO3T22qDQAAAUYX8t/TLm/RNRMdtE1MC57yseFl1dW7fD9NF5nn+eky/rMf18e2xn3F93dE82/11ztGx38w5un30zmfP9ez7jKzXu9d5/X2333rv3iNrV//PdJHbdK3lYKxz9s5bTvY/c4+ROUe39+Ydea6ad+R9Rtbrv9f57N571/9lDV/q6kDgowkEgkAgCASCQCAIBIJAIAgEgkAgCASCQCAIBIJAIAgEgkAgCASCQCAIBIJAIAgEgkAgCASCQCAIBIJAIAgEgkAgCASCQCAIBIJAIAgEgkAgCASCQCAIBIJAIAgEgkAgCASCQCAIBIJAIAgEgkAgCASCQCAIBMIdnnfukdjMDtoAAAAASUVORK5CYII=" },
+        new object[] { Type.Code39, "1234567890123", "iVBORw0KGgoAAAANSUhEUgAAAMgAAAAyCAYAAAAZUZThAAAACXBIWXMAAA7EAAAOxAGVKw4bAAABEElEQVR4nO3T0WqDQBQA0Qj5b+mXtwk0kIZ11qWhUDjnRU1y1TXO9fPm8m3bto/b4f68f9/ej0f7R5+9zp+ZPTMz2j+aG20fv52t4Wg9o7nZes7MrDzz2bOu6x09s9k9jtbyH9+Dlff60cT18tM+2N/f9P1s9uzMyty71jCbm61n9d5+ez8r97b6n61c++w5/+o9WD7nayDAE4FAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQBAIBIFAEAgEgUAQCASBQPgCRxJWCWQeKtkAAAAASUVORK5CYII=" },
+    };
+
+        public IEnumerator<object[]> GetEnumerator()
+        { return _data.GetEnumerator(); }
+        IEnumerator IEnumerable.GetEnumerator() => throw new NotImplementedException();
     }
 }
\ No newline at end of file
diff --git a/NetBarcode.Tests/NetBarcode.Tests.csproj b/NetBarcode.Tests/NetBarcode.Tests.csproj
index be8b919..2536b74 100644
--- a/NetBarcode.Tests/NetBarcode.Tests.csproj
+++ b/NetBarcode.Tests/NetBarcode.Tests.csproj
@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net7.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
 
diff --git a/NetBarcode/NetBarcode.csproj b/NetBarcode/NetBarcode.csproj
index d3cf94d..7886027 100644
--- a/NetBarcode/NetBarcode.csproj
+++ b/NetBarcode/NetBarcode.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>netstandard2.0</TargetFramework>
+    <TargetFramework>netstandard2.1</TargetFramework>
     <PackageProjectUrl>https://github.com/Tagliatti/NetBarcode</PackageProjectUrl>
     <PackageTags>barcode</PackageTags>
     <PackageIconUrl>https://i.imgur.com/BhcO3DF.jpg</PackageIconUrl>