diff --git a/components/canvas/webgl_thread.rs b/components/canvas/webgl_thread.rs
index be9d1d48f86..f1b31d8ba15 100644
--- a/components/canvas/webgl_thread.rs
+++ b/components/canvas/webgl_thread.rs
@@ -24,7 +24,7 @@ use euclid::default::Size2D;
 use fnv::FnvHashMap;
 use half::f16;
 use log::{debug, error, trace, warn};
-use pixels::{self, PixelFormat};
+use pixels::{self, unmultiply_inplace, PixelFormat};
 use sparkle::gl;
 use sparkle::gl::{GLint, GLuint, Gl};
 use surfman::chains::{PreserveBuffer, SwapChains, SwapChainsAPI};
@@ -2838,15 +2838,6 @@ fn premultiply_inplace(format: TexFormat, data_type: TexDataType, pixels: &mut [
     }
 }
 
-fn unmultiply_inplace(pixels: &mut [u8]) {
-    for rgba in pixels.chunks_mut(4) {
-        let a = (rgba[3] as f32) / 255.0;
-        rgba[0] = (rgba[0] as f32 / a) as u8;
-        rgba[1] = (rgba[1] as f32 / a) as u8;
-        rgba[2] = (rgba[2] as f32 / a) as u8;
-    }
-}
-
 /// Flips the pixels in the Vec on the Y axis.
 fn flip_pixels_y(
     internal_format: TexFormat,
diff --git a/components/pixels/lib.rs b/components/pixels/lib.rs
index bd2aea5b410..e90df8e32ea 100644
--- a/components/pixels/lib.rs
+++ b/components/pixels/lib.rs
@@ -197,6 +197,15 @@ pub fn detect_image_format(buffer: &[u8]) -> Result<ImageFormat, &str> {
     }
 }
 
+pub fn unmultiply_inplace(pixels: &mut [u8]) {
+    for rgba in pixels.chunks_mut(4) {
+        let a = (rgba[3] as f32) / 255.0;
+        rgba[0] = (rgba[0] as f32 / a) as u8;
+        rgba[1] = (rgba[1] as f32 / a) as u8;
+        rgba[2] = (rgba[2] as f32 / a) as u8;
+    }
+}
+
 fn is_gif(buffer: &[u8]) -> bool {
     buffer.starts_with(b"GIF87a") || buffer.starts_with(b"GIF89a")
 }