diff --git a/Dockerfile b/Dockerfile
index 1d29b465..ae454fb7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM debian:buster-slim
 ENV DEBIAN_FRONTEND=noninteractive
 
-RUN apt-get update && apt-get install -y build-essential bash git locales gcc-aarch64-linux-gnu libc6-dev-arm64-cross device-tree-compiler imagemagick \
+RUN apt-get update && apt-get install -y build-essential bash git locales gcc-aarch64-linux-gnu libc6-dev-arm64-cross device-tree-compiler \
     && rm -rf /var/lib/apt/lists/* \
     && localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
 ENV LANG en_US.utf8
diff --git a/Makefile b/Makefile
index ea019a35..482be60e 100644
--- a/Makefile
+++ b/Makefile
@@ -186,10 +186,10 @@ update_cfg:
 build/build_tag.h: update_tag
 build/build_cfg.h: update_cfg
 
-build/%.bin: data/%.png
+build/%.bin: data/%.bin
 	@echo "  IMG   $@"
 	@mkdir -p "$(dir $@)"
-	@convert $< -background black -flatten -depth 8 rgba:$@
+	@cp $< $@
 
 build/%.o: build/%.bin
 	@echo "  BIN   $@"
diff --git a/README.md b/README.md
index 5b5600e8..8567ea79 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,6 @@
 ## Building
 
 You need an `aarch64-linux-gnu-gcc` cross-compiler toolchain (or a native one, if running on ARM64).
-You also need `convert` (from ImageMagick) for the boot logos.
 
 ```shell
 $ git clone --recursive https://github.com/AsahiLinux/m1n1.git
@@ -21,7 +20,7 @@ Building on ARM64 macOS is supported with clang and LLVM; you need to use Homebr
 install the required dependencies:
 
 ```shell
-$ brew install llvm imagemagick
+$ brew install llvm
 ```
 
 After that, just type `make`.
diff --git a/data/bootlogo_128.bin b/data/bootlogo_128.bin
new file mode 100644
index 00000000..6cea73a9
Binary files /dev/null and b/data/bootlogo_128.bin differ
diff --git a/data/bootlogo_256.bin b/data/bootlogo_256.bin
new file mode 100644
index 00000000..de38abfe
Binary files /dev/null and b/data/bootlogo_256.bin differ
diff --git a/data/makelogo.sh b/data/makelogo.sh
new file mode 100755
index 00000000..79e44916
--- /dev/null
+++ b/data/makelogo.sh
@@ -0,0 +1,2 @@
+convert bootlogo_128.png -background black -flatten -depth 8 rgba:bootlogo_128.bin
+convert bootlogo_256.png -background black -flatten -depth 8 rgba:bootlogo_256.bin