diff --git a/Cargo.lock b/Cargo.lock
index 04ca3ff..a5db915 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -163,7 +163,7 @@ checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
 
 [[package]]
 name = "colorutils-rs"
-version = "0.2.2"
+version = "0.2.3"
 dependencies = [
  "half",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 27c685b..fa94949 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@ workspace = { members = ["src/app"] }
 
 [package]
 name = "colorutils-rs"
-version = "0.2.2"
+version = "0.2.3"
 edition = "2021"
 description = "Hig performance utilities for color format handling and conversion."
 readme = "README.md"
diff --git a/src/app/src/main.rs b/src/app/src/main.rs
index a8e7f89..7eacd53 100644
--- a/src/app/src/main.rs
+++ b/src/app/src/main.rs
@@ -46,26 +46,26 @@ fn main() {
     println!("dimensions {:?}", img.dimensions());
 
     println!("{:?}", img.color());
-    let src_bytes = img.as_bytes();
+    let mut src_bytes = img.as_bytes();
     let width = dimensions.0;
     let height = dimensions.1;
-    let components = 3;
+    let components = 4;
 
     let mut dst_rgba = vec![];
     dst_rgba.resize(4usize * width as usize * height as usize, 0u8);
-    // let rgba = &rgb_to_rgba(
-    //     &src_bytes,
-    //     3u32 * width,
-    //     &mut dst_rgba,
-    //     4u32 * width,
-    //     width,
-    //     height,
-    //     255,
-    // );
-    // src_bytes = rgba;
+    rgb_to_rgba(
+        &src_bytes,
+        3u32 * width,
+        &mut dst_rgba,
+        4u32 * width,
+        width,
+        height,
+        255,
+    );
+    src_bytes = &dst_rgba;
 
     let mut xyz: Vec<f32> = vec![];
-    xyz.resize(3 * width as usize * height as usize, 0f32);
+    xyz.resize(4 * width as usize * height as usize, 0f32);
 
     let mut a_plane: Vec<f32> = vec![];
     a_plane.resize(width as usize * height as usize, 0f32);
@@ -82,15 +82,7 @@ fn main() {
         //     width,
         //     height,
         // );
-        rgb_to_lab(
-            src_bytes,
-            width * components,
-            &mut xyz,
-            width * 3 * std::mem::size_of::<f32>() as u32,
-            width,
-            height,
-        );
-        // rgb_to_linear(
+        // rgba_to_linear(
         //     src_bytes,
         //     width * components,
         //     &mut xyz,
@@ -99,6 +91,15 @@ fn main() {
         //     height,
         //     TransferFunction::Srgb,
         // );
+        rgba_to_linear(
+            src_bytes,
+            width * components,
+            &mut xyz,
+            width * 4 * std::mem::size_of::<f32>() as u32,
+            width,
+            height,
+            TransferFunction::Srgb,
+        );
         let elapsed_time = start_time.elapsed();
         // Print the elapsed time in milliseconds
         println!("sRGB to XYZ: {:.2?}", elapsed_time);
@@ -117,13 +118,14 @@ fn main() {
     //     height,
     // );
 
-    lab_to_srgb(
+    linear_to_rgba(
         &xyz,
-        width * 3 * std::mem::size_of::<f32>() as u32,
+        width * 4 * std::mem::size_of::<f32>() as u32,
         &mut dst_bytes,
         width * components,
         width,
         height,
+        TransferFunction::Srgb,
     );
 
     // linear_to_rgb(
diff --git a/src/image_to_linear.rs b/src/image_to_linear.rs
index b945488..8ae045a 100644
--- a/src/image_to_linear.rs
+++ b/src/image_to_linear.rs
@@ -157,7 +157,7 @@ pub fn rgba_to_linear(
     height: u32,
     transfer_function: TransferFunction,
 ) {
-    channels_to_linear::<{ ImageConfiguration::Rgba as u8 }, false>(
+    channels_to_linear::<{ ImageConfiguration::Rgba as u8 }, true>(
         src,
         src_stride,
         dst,
diff --git a/src/linear_to_image.rs b/src/linear_to_image.rs
index 7a10463..cb83743 100644
--- a/src/linear_to_image.rs
+++ b/src/linear_to_image.rs
@@ -156,7 +156,7 @@ pub fn linear_to_rgba(
     height: u32,
     transfer_function: TransferFunction,
 ) {
-    linear_to_gamma_channels::<{ ImageConfiguration::Rgba as u8 }, false>(
+    linear_to_gamma_channels::<{ ImageConfiguration::Rgba as u8 }, true>(
         src,
         src_stride,
         dst,