diff --git a/pkg/dithering/IMG_0732.jpg b/pkg/dithering/IMG_0732.jpg
new file mode 100644
index 0000000..2ae773e
Binary files /dev/null and b/pkg/dithering/IMG_0732.jpg differ
diff --git a/pkg/dithering/cmd/jpg2png.go b/pkg/dithering/cmd/jpg2png.go
new file mode 100644
index 0000000..07bbd8a
--- /dev/null
+++ b/pkg/dithering/cmd/jpg2png.go
@@ -0,0 +1,20 @@
+//go:build ignore
+
+package main
+
+import (
+	"image/jpeg"
+	"image/png"
+	"os"
+)
+
+func main() {
+	img, err := jpeg.Decode(os.Stdin)
+	if err != nil {
+		panic(err)
+	}
+	err = png.Encode(os.Stdout, img)
+	if err != nil {
+		panic(err)
+	}
+}
diff --git a/pkg/dithering/cmd/main.go b/pkg/dithering/cmd/main.go
index 6ae3cb7..3069708 100644
--- a/pkg/dithering/cmd/main.go
+++ b/pkg/dithering/cmd/main.go
@@ -1,6 +1,8 @@
 package main
 
 import (
+	"image"
+
 	"git.nkpl.cc/twocookedfaggots/imageutils/pkg/dithering"
 	"git.nkpl.cc/twocookedfaggots/imageutils/util"
 )
diff --git a/pkg/dithering/cmd/nz9ipc5vywca1.jpg b/pkg/dithering/cmd/nz9ipc5vywca1.jpg
new file mode 100644
index 0000000..427d887
Binary files /dev/null and b/pkg/dithering/cmd/nz9ipc5vywca1.jpg differ
diff --git a/pkg/dithering/cmd/something.png b/pkg/dithering/cmd/something.png
new file mode 100644
index 0000000..11d70a8
Binary files /dev/null and b/pkg/dithering/cmd/something.png differ
diff --git a/pkg/dithering/cmd/touhouthemedbj.png b/pkg/dithering/cmd/touhouthemedbj.png
new file mode 100644
index 0000000..533a1ee
Binary files /dev/null and b/pkg/dithering/cmd/touhouthemedbj.png differ
diff --git a/pkg/palette b/pkg/palette
new file mode 160000
index 0000000..e161720
--- /dev/null
+++ b/pkg/palette
@@ -0,0 +1 @@
+Subproject commit e161720f1cf08d296c750662eaf5ae4d25811b74
diff --git a/util/hex.go b/util/hex.go
index 65aa065..d0e8af3 100644
--- a/util/hex.go
+++ b/util/hex.go
@@ -1,9 +1,9 @@
-package imageutils
+package util
 
 import (
+	"errors"
 	"fmt"
 	"image/color"
-	"errors"
 )
 
 var ParseHexColorErr = errors.New("invalid length, must be 7 or 4")
diff --git a/util/hex_test.go b/util/hex_test.go
index 6a0123c..7dc0cab 100644
--- a/util/hex_test.go
+++ b/util/hex_test.go
@@ -1,4 +1,4 @@
-package imageutils
+package util
 
 import (
 	"fmt"
diff --git a/util/stdio.go b/util/stdio.go
index 3b0757b..d826b7d 100644
--- a/util/stdio.go
+++ b/util/stdio.go
@@ -1,8 +1,14 @@
-package imageutils
+package util
+
+import (
+	"image"
+	"image/png"
+	"os"
+)
 
 // ProcessImage takes input png image from stdin, processes it with f and outputs it to stdout.
-func ProcessStdio(f func(image.Image) image.Image) {
-      	img, err := png.Decode(os.Stdin)
+func ProcessStdio(f func(image.Image) image.Image) error {
+	img, err := png.Decode(os.Stdin)
 	if err != nil {
 		return err
 	}