diff --git a/components/pixels/lib.rs b/components/pixels/lib.rs
index 8b002e16190..c6f85348df1 100644
--- a/components/pixels/lib.rs
+++ b/components/pixels/lib.rs
@@ -195,9 +195,13 @@ pub fn rgba8_premultiply_inplace(pixels: &mut [u8]) -> bool {
     is_opaque
 }
 
+/// Returns a*b/255, rounding any fractional bits to nearest integer
+/// to reduce the loss of precision after multiple consequence alpha
+/// (un)premultiply operations.
 #[inline(always)]
 pub fn multiply_u8_color(a: u8, b: u8) -> u8 {
-    (a as u32 * b as u32 / 255) as u8
+    let c = a as u32 * b as u32 + 128;
+    ((c + (c >> 8)) >> 8) as u8
 }
 
 pub fn clip(
diff --git a/tests/wpt/meta/html/canvas/element/manual/imagebitmap/createImageBitmap-premultiplyAlpha.html.ini b/tests/wpt/meta/html/canvas/element/manual/imagebitmap/createImageBitmap-premultiplyAlpha.html.ini
deleted file mode 100644
index a6e6c78a2ad..00000000000
--- a/tests/wpt/meta/html/canvas/element/manual/imagebitmap/createImageBitmap-premultiplyAlpha.html.ini
+++ /dev/null
@@ -1,9 +0,0 @@
-[createImageBitmap-premultiplyAlpha.html]
-  [createImageBitmap: from Canvas2D, unpremultiplied, drawn to canvas]
-    expected: FAIL
-
-  [createImageBitmap: from Canvas2D willReadFrequently:true, unpremultiplied, drawn to canvas]
-    expected: FAIL
-
-  [createImageBitmap: from Canvas2D willReadFrequently:false, unpremultiplied, drawn to canvas]
-    expected: FAIL