diff --git a/mypaint.mk b/mypaint.mk
index e69de29..75b2417 100644
--- a/mypaint.mk
+++ b/mypaint.mk
@@ -0,0 +1,100 @@
+# SPDX-License-Identifier: LGPL-3.0-or-later
+#
+# SPDX-FileCopyrightText: 2023 Glenn Y. Rolland <glenux@glenux.net>
+# Copyright © 2023 Glenn Y. Rolland <glenux@glenux.net>
+
+##
+## MYPAINT MODULE
+##
+
+##
+## External variables (API)
+##
+MYPAINT_SUFFIX ?= ora
+MYPAINT_SRC_DIR ?=
+MYPAINT_DEST_DIR ?=
+MYPAINT_PDF_DENSITY ?= 75
+MYPAINT_JPG_QUALITY ?= 100
+
+##
+## Internal variables (lazy recursive evaluation)
+##
+
+## Find .ora files
+MYPAINT_ORA = $(shell find $(MYPAINT_SRC_DIR) \( -name '*.ora' ! -name '_*' \))
+MYPAINT_ORA_PNG = $(patsubst $(MYPAINT_SRC_DIR)/%.ora,$(MYPAINT_DEST_DIR)/%.ora.png,$(MYPAINT_ORA))
+MYPAINT_ORA_JPG = $(patsubst $(MYPAINT_SRC_DIR)/%.ora,$(MYPAINT_DEST_DIR)/%.ora.jpg,$(MYPAINT_ORA))
+MYPAINT_ORA_PDF = $(patsubst $(MYPAINT_SRC_DIR)/%.ora,$(MYPAINT_DEST_DIR)/%.ora.pdf,$(MYPAINT_ORA))
+
+##
+## Prerequisistes (system packages)
+##
+MYPAINT_APT_PACKAGES := unzip mypaint imagemagick
+
+##
+## Rules
+##
+
+$(MYPAINT_DEST_DIR):
+	mkdir -p $(MYPAINT_DEST_DIR)
+
+$(MYPAINT_DEST_DIR)/%.ora.png: $(MYPAINT_SRC_DIR)/%.ora | $(MYPAINT_DEST_DIR)
+	TMPDIR="$$(mktemp -d)" \
+		&& unzip -q $< -d "$$TMPDIR" mergedimage.png \
+		&& touch "$$TMPDIR/mergedimage.png" \
+		&& mv "$$TMPDIR/mergedimage.png" $@
+
+$(MYPAINT_DEST_DIR)/%.ora.jpg: $(MYPAINT_DEST_DIR)/%.ora.png | $(MYPAINT_DEST_DIR)
+	convert -quality $(MYPAINT_JPG_QUALITY) $< $@
+
+$(MYPAINT_DEST_DIR)/%.ora.pdf: $(MYPAINT_DEST_DIR)/%.ora.png | $(MYPAINT_DEST_DIR)
+	convert -density $(MYPAINT_PDF_DENSITY) $< $@
+
+.PHONY: mypaint-ora-jpg
+mypaint-ora-jpg: $(MYPAINT_ORA_JPG)
+
+.PHONY: mypaint-ora-png
+mypaint-ora-png: $(MYPAINT_ORA_PNG)
+
+.PHONY: mypaint-ora-pdf
+mypaint-ora-pdf: $(MYPAINT_ORA_PDF)
+
+.PHONY: mypaint-jpg
+mypaint-jpg: mypaint-ora-jpg
+
+.PHONY: mypaint-png
+mypaint-png: mypaint-ora-png
+
+.PHONY: mypaint-pdf
+mypaint-pdf: mypaint-ora-pdf
+
+.PHONY: mypaint-clean-jpg
+mypaint-clean-jpg:
+	rm -f $(MYPAINT_ORA_JPG)
+
+.PHONY: mypaint-clean-png
+mypaint-clean-png:
+	rm -f $(MYPAINT_ORA_PNG)
+
+.PHONY: mypaint-clean-pdf
+mypaint-clean-pdf:
+	rm -f $(MYPAINT_ORA_PDF)
+
+.PHONY: mypaint-clean
+mypaint-clean: mypaint-clean-pdf mypaint-clean-jpg
+
+.PHONY: mypaint-info
+mypaint-info:
+	@echo "MYPAINT:"
+	@echo "  External variables:"
+	@echo "    MYPAINT_SUFFIX: $(MYPAINT_SUFFIX)"
+	@echo "    MYPAINT_SRC_DIR: $(MYPAINT_SRC_DIR)"
+	@echo "    MYPAINT_DEST_DIR: $(MYPAINT_DEST_DIR)"
+	@echo "    MYPAINT_PDF_DENSITY: $(MYPAINT_PDF_DENSITY)"
+	@echo "    MYPAINT_JPG_QUALITY: $(MYPAINT_JPG_QUALITY)"
+	@echo "  Internal variables"
+	@echo "    MYPAINT_ORA: $(MYPAINT_ORA)"
+	@echo "    MYPAINT_ORA_PNG: $(MYPAINT_ORA_PDF)"
+	@echo "    MYPAINT_ORA_PDF: $(MYPAINT_ORA_PDF)"
+	@echo "    MYPAINT_ORA_JPG: $(MYPAINT_ORA_JPG)"
+