diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 32e316f..594faac 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,10 +15,15 @@ jobs:
     - uses: actions/checkout@v3
     - name: Install dependencies
       run: sudo apt update -y && sudo apt install meson build-essential libmagick++-dev -y
+    - name: Download executable
+      uses: actions/download-artifact@v2.1.1
+      with:
+        name: linux
+        path: b16convert
     - name: Set up build directory
       run: meson setup builddir
     - name: Run test script
-      run: ./test.sh
+      run: ./test.sh -p b16convert
     - name: Upload test artifacts
       uses: actions/upload-artifact@v3.1.3
       with:
diff --git a/main.cpp b/main.cpp
index c67ad54..22b97aa 100644
--- a/main.cpp
+++ b/main.cpp
@@ -20,7 +20,7 @@ void usage() {
 	printf("-out <output>\n");
 	printf("\tSets the output file");
 	printf("-bpp <bpp>\n");
-	printf("\tSets the desired bits per pixel. May be 0 (default), 2, 4, or 8. 0: automatic.\n");
+	printf("\tSets the desired bits per pixel. May be 0 (default), 1, 2, 4, or 8. 0: automatic.\n");
 	printf("-significant <color count>\n");
 	printf("\tSets the desired number of significant palette entries. Must be at least 0 and at most 256. 0 means automatic. Default: 0\n");
 	printf("-resize <width> <height>\n");
@@ -80,6 +80,7 @@ int main(int argc, char **argv) {
 			}
 			switch (tbpp) {
 				case 0:
+				case 1:
 				case 2:
 				case 4:
 				case 8:
diff --git a/test.sh b/test.sh
index 2db29eb..664a6fd 100755
--- a/test.sh
+++ b/test.sh
@@ -1,22 +1,116 @@
 #!/bin/bash
+usage() {
+	cat << EOF
+$0 usage:
+-p|--use-program <program path>
+	Uses the specified already-compiled binary rather than compiling manually
+-i|--input-image <image path>
+	Adds an image input at the specified path to the image list.
+-b|--output-bpp <bpp>
+	Adds a bitdepth to the list to test with
+-r|--resize <width> <height>
+	Adds a resize to the list to test with
+--no-reverse
+	Disables reverse operation testing
+--no-dither
+	Disables dithering testing
+-n|--no-defaults
+	Disables default settings
+EOF
+	exit 1
+}
 oldpwd="$(pwd)"
 cd "$(dirname "$0")"
-meson setup builddir
-meson compile -C builddir || exit $?
-images=("TEST.png" "PACK.png")
+converter="./builddir/b16converter"
+prebuilt=0
+images=()
+bpp=()
+resize=()
+enable_defaults=1
+dither=1
+reverse=1
+enable_reverse=1
+enable_dither=1
 outdir="testout"
-mkdir "$outdir"
+OPTIONS=$(getopt -o "hp:i:r::no:" --long "help,use-program:,input-image:,output-bpp:,resize::,no-defaults,output-dir:,no-reverse,no-dither" -- "$@")
+if [ $? != 0 ]; then
+	usage
+fi
+eval set -- "$OPTIONS"
+while [ -n "$1" ]; do
+	case "$1" in
+		-o|--output-dir)
+			outdir="$2"
+			shift 2
+			;;
+		-h|--help)
+			usage
+			;;
+		-p|--use-program)
+			converter="$2"
+			prebuilt=1
+			shift 2
+			;;
+		-i|--input-image)
+			images+="$2"
+			shift 2
+			;;
+		-b|--output-bpp)
+			bpp+="$2"
+			shift 2
+			;;
+		-r|--resize)
+			resize+="$2x$3"
+			shift 2
+			;;
+		-n|--no-defaults)
+			enable_defaults=0
+			shift
+			;;
+		--no-reverse)
+			enable_reverse=0
+			shift
+			;;
+		--no-dither)
+			enable_dither=0
+			shift
+			;;
+		--)
+			shift
+			break
+			;;
+		*)
+			usage
+			;;
+	esac
+done
+if [ $enable_defaults -ne 0 ]; then
+	images+=("TEST.png" "PACK.png")
+	bpp+=(1 2 4 8)
+	resize+=("8x8" "16x16" "32x32" "64x64" "320x240" "640x480")
+fi
+if [ $prebuilt -eq 0 ]; then
+	meson setup builddir
+	meson compile -C builddir || exit $?
+fi
+mkdir -p "$outdir"
 for img in "${images[@]}"; do
-	for bpp in 2 4 8; do
-		for size in "8x8" "16x16" "32x32" "64x64" "320x240" "640x480"; do
+	for bpp in "${bpp[@]}"; do
+		for size in "${resize[@]}"; do
 			width="$(echo -n "$size" | cut -dx -f1)"
 			height="$(echo -n "$size" | cut -dx -f2)"
-			name="$(echo -n "$img" | sed 's/\.png$//')"
+			name="$(basename "$img" | sed 's/\.png$//')"
 			name="$(printf "%s.%sP.%sB" "$name" "$width" "$bpp")"
-			./builddir/graphicsconverter -in "$img" -out "$outdir/$name.B16" -bpp "$bpp" -resize "$width" "$height" -border 15 0 15
-			./builddir/graphicsconverter -in "$img" -out "$outdir/$name.D.B16" -bpp "$bpp" -resize "$width" "$height" -dither -border 15 0 15
-			./builddir/graphicsconverter -reverse -in "$outdir/$name.B16" -out "$outdir/$name.PNG" -resize "$width" "$height"
-			./builddir/graphicsconverter -reverse -in "$outdir/$name.D.B16" -out "$outdir/$name.D.PNG" -resize "$width" "$height" -dither
+			./builddir/b16converter -in "$img" -out "$outdir/$name.B16" -bpp "$bpp" -resize "$width" "$height" -border 15 0 15
+			if [ $enable_dither -ne 0 ]; then
+				./builddir/b16converter -in "$img" -out "$outdir/$name.D.B16" -bpp "$bpp" -resize "$width" "$height" -dither -border 15 0 15
+			fi
+			if [ $enable_reverse -ne 0 ]; then
+				./builddir/b16converter -reverse -in "$outdir/$name.B16" -out "$outdir/$name.PNG" -resize "$width" "$height"
+				if [ $enable_dither -ne 0 ]; then
+					./builddir/b16converter -reverse -in "$outdir/$name.D.B16" -out "$outdir/$name.D.PNG" -resize "$width" "$height" -dither
+				fi
+			fi
 		done
 	done
 done