script

.gitignore

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+*.pdf
+/.venv

README.md

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+# booklet.py
+
+A simple Python script to transform a PDF to a printable booklet
+
+```python3 -m venv ./.venv
+source ./.venv/bin/activate
+pip install requirements.txt
+
+python3 booklet.py document.pdf```

booklet.py

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+import sys
+from pypdf import PaperSize, PdfReader, PdfWriter, Transformation
+
+file = str(sys.argv[1])
+
+reader = PdfReader(file)
+count = len(reader.pages)
+sheets = int(count/4)
+pages = count - 1
+writer = PdfWriter()
+w = PaperSize.A5.width
+h = PaperSize.A5.height
+
+for i in range(0, sheets):
+
+    page = writer.add_blank_page(width=PaperSize.A4.height, height=PaperSize.A4.width)
+
+    if pages - i * 2 < count:
+        left_front = reader.pages[pages - i * 2]
+        left_front.scale_to(width=w, height=h)
+        page.merge_transformed_page(left_front, Transformation().translate(0, 0))
+
+    if i * 2 < count:
+        right_front = reader.pages[i * 2]
+        right_front.scale_to(width=w, height=h)
+        page.merge_transformed_page(right_front, Transformation().translate(w, 0))
+
+    page = writer.add_blank_page(width=PaperSize.A4.height, height=PaperSize.A4.width)
+
+    if i * 2 + 1 < count:
+        left_back = reader.pages[i * 2 + 1]
+        left_back.scale_to(width=w, height=h)
+        page.merge_transformed_page(left_back, Transformation().translate(0, 0))
+
+    if pages - i * 2 - 1 < count:
+        right_back = reader.pages[pages - i * 2 - 1]
+        right_back.scale_to(width=w, height=h)
+        page.merge_transformed_page(right_back, Transformation().translate(w, 0))
+
+writer.write(file + '.booklet.pdf')

requirements.txt

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+pypdf==6.19.0