diff --git a/src/pixie.nim b/src/pixie.nim
index 2f96229..dd6a0c2 100644
--- a/src/pixie.nim
+++ b/src/pixie.nim
@@ -44,8 +44,7 @@ proc writeFile*(image: Image, filePath: string) =
   let fileFormat = case splitFile(filePath).ext:
     of ".png": ffPng
     of ".bmp": ffBmp
-    of ".jpg": ffJpg
-    of ".jpeg": ffJpg
+    of ".jpg",".jpeg": ffJpg
     else:
       raise newException(PixieError, "Unsupported image file extension")
   image.writeFile(filePath, fileformat)
diff --git a/tests/benchmark_blends.nim b/tests/benchmark_blends.nim
index 8febace..98a0b07 100644
--- a/tests/benchmark_blends.nim
+++ b/tests/benchmark_blends.nim
@@ -319,3 +319,17 @@ timeIt "blendExcludeMaskFloats":
     ).rgba
 
 reset()
+
+timeIt "blendNormalPremultiplied":
+  for i in 0 ..< backdrop.data.len:
+    backdrop.data[i] = blendNormalPremultiplied(backdrop.data[i], source.data[i])
+
+when defined(amd64) and not defined(pixieNoSimd):
+  import nimsimd/sse2
+
+  timeIt "blendNormalPremultiplied [simd]":
+    for i in countup(0, backdrop.data.len - 4, 4):
+      let
+        b = mm_loadu_si128(backdrop.data[i].addr)
+        s = mm_loadu_si128(source.data[i].addr)
+      mm_storeu_si128(backdrop.data[i].addr, blendNormalPremultiplied(b, s))
diff --git a/tests/benchmark_images.nim b/tests/benchmark_images.nim
index 32b28fe..9f5c118 100644
--- a/tests/benchmark_images.nim
+++ b/tests/benchmark_images.nim
@@ -27,11 +27,11 @@ timeIt "sharpOpacity":
 
 a.fill(rgba(63, 127, 191, 191))
 
-timeIt "toAlphy":
-  a.toAlphy()
+timeIt "toPremultipliedAlpha":
+  a.toPremultipliedAlpha()
 
-timeIt "fromAlphy":
-  a.fromAlphy()
+timeIt "toStraightAlpha":
+  a.toStraightAlpha()
 
 timeIt "lerp integers":
   for i in 0 ..< 100000:
diff --git a/tests/validate_png.nim b/tests/validate_png.nim
index 79155e1..b7648ad 100644
--- a/tests/validate_png.nim
+++ b/tests/validate_png.nim
@@ -2,7 +2,7 @@ import chroma, pixie/fileformats/png, stb_image/read as stbi, strformat, pngsuit
 
 for file in pngSuiteFiles:
   let
-    data = readFile(&"tests/images/pngsuite/{file}.png")
+    data = readFile(&"tests/images/png/pngsuite/{file}.png")
     pixieLoaded = decodePng(cast[seq[uint8]](data))
 
   var