diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..3c281a1
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,42 @@
+# ------------------------------------------------------------------------------
+# Variables
+
+tex_files = document.tex document.bib background.tex conclusion.tex design.tex \
+		development.tex introduction.tex validation.tex
+
+aux_files = document.aux document.bbl document.bcf document.blg document.idx \
+		document.log document.run.xml document.synctex.gz document.toc \
+		pdfa.xmpi
+
+aux_folders = ./_minted/
+
+output_file = document.pdf
+
+compile_tex = lualatex --jobname=document -file-line-error -shell-escape \
+		--synctex=1 -interaction=nonstopmode
+
+.DEFAULT_GOAL := all
+.PHONY: clean cleanall
+
+# ------------------------------------------------------------------------------
+# Rules
+
+all: $(output_file)
+
+document.pdf: $(tex_files)
+	@echo "Compiling 1/4: lualatex"
+	@$(compile_tex) document.tex > /dev/null
+	@echo "Compiling 2/4: biber"
+	@biber document > /dev/null
+	@echo "Compiling 3/4: lualatex"
+	@$(compile_tex) document.tex > /dev/null
+	@echo "Compiling 4/4: lualatex"
+	@$(compile_tex) document.tex > /dev/null
+	@echo "Done"
+
+clean:
+	rm -f $(aux_files)
+	rm -rf $(aux_folders)
+
+cleanall: clean
+	rm -f $(output_file)
diff --git a/document.pdf b/document.pdf
index 76b4363..f264f3d 100644
Binary files a/document.pdf and b/document.pdf differ
diff --git a/document.tex b/document.tex
index 60c2be3..db03b5b 100644
--- a/document.tex
+++ b/document.tex
@@ -1,4 +1,4 @@
-\documentclass[11pt, twoside, openright]{book}
+\documentclass[11pt, twoside, openright, hidelinks]{book}
 
 %% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - %%
 %%                               Load Packages                               %%
@@ -21,6 +21,8 @@
 
 \usepackage[italian,main=english]{babel} %% language
 
+\usepackage[a-3u,mathxmp]{pdfx}
+
 \pagestyle{headings}
 
 \usepackage{scrlayer-scrpage}
@@ -79,7 +81,7 @@
 \usepackage{makeidx}
 
 %% load last
-\usepackage[hidelinks]{hyperref} %% links for table of contents, load last
+\usepackage{hyperref} %% links for table of contents, load last
 \usepackage{bookmark} %% for better table of contents
 
 %% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - %%