diff --git a/ImageCore.Tests/TestCompressor.cs b/ImageCore.Tests/TestLosslessCompressor.cs
similarity index 73%
rename from ImageCore.Tests/TestCompressor.cs
rename to ImageCore.Tests/TestLosslessCompressor.cs
index defbd9d..edee4be 100644
--- a/ImageCore.Tests/TestCompressor.cs
+++ b/ImageCore.Tests/TestLosslessCompressor.cs
@@ -34,22 +34,19 @@ namespace ImageCore.Tests
         }
 
         [Fact]
-        public void TestNullCompressor_Compress()
+        public void TestLosslessCompressor_Compress_Stream()
         {
-            ICompressor compressor = new NullCompressor();
+            ICompressor compressor = new LosslessCompressor();
             var sourceFileName = Path.Combine(_testsProjectDirectory, "test_pictures/IMG_0138.HEIC");
             var destinationFileName = Path.GetTempFileName();
             File.Copy(sourceFileName, destinationFileName, true);
-            compressor.Compress(destinationFileName);
 
-            var originalFile = File.Open(sourceFileName, FileMode.Open);
-            var compressedFile = File.Open(destinationFileName, FileMode.Open);
+            var destinationFileHandle = File.Open(destinationFileName, FileMode.Open);
+            var lengthBeforeCompression = destinationFileHandle.Length;
 
-            Assert.True(compressedFile.Length == originalFile.Length);
+            compressor.Compress(destinationFileHandle);
 
-            originalFile.Close();
-            compressedFile.Close();
-            File.Delete(destinationFileName);
+            Assert.True(destinationFileHandle.Length < lengthBeforeCompression);
         }
     }
 }
\ No newline at end of file
diff --git a/ImageCore.Tests/TestNullCompressor.cs b/ImageCore.Tests/TestNullCompressor.cs
new file mode 100644
index 0000000..068ccd9
--- /dev/null
+++ b/ImageCore.Tests/TestNullCompressor.cs
@@ -0,0 +1,37 @@
+using System;
+using System.IO;
+using Image.Core;
+using Xunit;
+
+namespace ImageCore.Tests
+{
+    public class TestNullCompressor
+    {
+        private readonly string _testsProjectDirectory;
+
+        public TestNullCompressor()
+        {
+            _testsProjectDirectory = Environment.GetEnvironmentVariable("IMAGE_CORE_TESTS");
+        }
+
+
+        [Fact]
+        public void TestNullCompressor_Compress()
+        {
+            ICompressor compressor = new NullCompressor();
+            var sourceFileName = Path.Combine(_testsProjectDirectory, "test_pictures/IMG_0138.HEIC");
+            var destinationFileName = Path.GetTempFileName();
+            File.Copy(sourceFileName, destinationFileName, true);
+            compressor.Compress(destinationFileName);
+
+            var originalFile = File.Open(sourceFileName, FileMode.Open);
+            var compressedFile = File.Open(destinationFileName, FileMode.Open);
+
+            Assert.True(compressedFile.Length == originalFile.Length);
+
+            originalFile.Close();
+            compressedFile.Close();
+            File.Delete(destinationFileName);
+        }
+    }
+}
\ No newline at end of file
diff --git a/ImageCore/Core/ICompressor.cs b/ImageCore/Core/ICompressor.cs
index 1d6835f..d60784b 100644
--- a/ImageCore/Core/ICompressor.cs
+++ b/ImageCore/Core/ICompressor.cs
@@ -1,4 +1,6 @@
-namespace Image.Core
+using System.IO;
+
+namespace Image.Core
 {
     /// <summary>
     ///     ICompressor is an interface for implementing image compressors.
@@ -10,5 +12,11 @@
         /// </summary>
         /// <param name="fileName">The file name of the image to be compressed.</param>
         void Compress(string fileName);
+
+        /// <summary>
+        ///     The method compresses an image in place.
+        /// </summary>
+        /// <param name="stream">The stream of the image to be compressed.</param>
+        void Compress(Stream stream);
     }
 }
\ No newline at end of file
diff --git a/ImageCore/Core/LosslessCompressor.cs b/ImageCore/Core/LosslessCompressor.cs
index b8bb397..c3447da 100644
--- a/ImageCore/Core/LosslessCompressor.cs
+++ b/ImageCore/Core/LosslessCompressor.cs
@@ -1,4 +1,5 @@
-using ImageMagick;
+using System.IO;
+using ImageMagick;
 
 namespace Image.Core
 {
@@ -22,5 +23,13 @@ namespace Image.Core
         {
             _imageOptimizer.LosslessCompress(fileName);
         }
+
+        /// <summary>
+        ///     <inheritdoc />
+        /// </summary>
+        public void Compress(Stream stream)
+        {
+            _imageOptimizer.LosslessCompress(stream);
+        }
     }
 }
\ No newline at end of file
diff --git a/ImageCore/Core/NullCompressor.cs b/ImageCore/Core/NullCompressor.cs
index 9d7545b..db5c99b 100644
--- a/ImageCore/Core/NullCompressor.cs
+++ b/ImageCore/Core/NullCompressor.cs
@@ -1,4 +1,6 @@
-namespace Image.Core
+using System.IO;
+
+namespace Image.Core
 {
     /// <summary>
     ///     Does nothing. Using this Compressor will have no effect.
@@ -13,5 +15,9 @@
         public void Compress(string fileName)
         {
         }
+
+        public void Compress(Stream stream)
+        {
+        }
     }
 }
\ No newline at end of file
diff --git a/ImgMetadataRemover.sln.DotSettings.user b/ImgMetadataRemover.sln.DotSettings.user
index 536e2d0..c01761f 100644
--- a/ImgMetadataRemover.sln.DotSettings.user
+++ b/ImgMetadataRemover.sln.DotSettings.user
@@ -6,5 +6,10 @@
 &lt;/AssemblyExplorer&gt;</s:String>
 	
 	<s:String x:Key="/Default/Environment/UnitTesting/UnitTestSessionStore/Sessions/=761234b5_002D46ba_002D4312_002Dab60_002Dd15d5d83a61a/@EntryIndexedValue">&lt;SessionState ContinuousTestingMode="0" IsActive="True" Name="TestGetFilenamesFromPath" xmlns="urn:schemas-jetbrains-com:jetbrains-ut-session"&gt;&#xD;
-  &lt;Project Location="C:\Users\nutiu\RiderProjects\ImgMetadataRemover\ImageCore.Tests" Presentation="&amp;lt;ImageCore.Tests&amp;gt;" /&gt;&#xD;
+  &lt;Or&gt;&#xD;
+    &lt;Project Location="C:\Users\nutiu\RiderProjects\ImgMetadataRemover\ImageCore.Tests" Presentation="&amp;lt;ImageCore.Tests&amp;gt;" /&gt;&#xD;
+    &lt;TestAncestor&gt;&#xD;
+      &lt;TestId&gt;xUnit::B915AC83-B6E9-4E0A-BA88-915F629F57C8::net6.0::ConsoleInterface.Tests.TestSimpleOutputSink&lt;/TestId&gt;&#xD;
+    &lt;/TestAncestor&gt;&#xD;
+  &lt;/Or&gt;&#xD;
 &lt;/SessionState&gt;</s:String></wpf:ResourceDictionary>
\ No newline at end of file