From 09fea4c0b84863cfe46336a8ab0cbe65c07744b1 Mon Sep 17 00:00:00 2001
From: Leon Denise <neondelice@protonmail.com>
Date: Sun, 27 Sep 2026 19:10:38 +0200
Subject: [PATCH] script

---
 .gitignore       |  2 ++
 README.md        |  9 +++++++++
 booklet.py       | 40 ++++++++++++++++++++++++++++++++++++++++
 requirements.txt |  1 +
 4 files changed, 52 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 README.md
 create mode 100644 booklet.py
 create mode 100644 requirements.txt

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..112e44c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.pdf
+/.venv
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..65ad54a
--- /dev/null
+++ b/README.md
@@ -0,0 +1,9 @@
+# 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```
diff --git a/booklet.py b/booklet.py
new file mode 100644
index 0000000..a45c43d
--- /dev/null
+++ b/booklet.py
@@ -0,0 +1,40 @@
+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')
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..0e5c1cf
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+pypdf==6.19.0