Initial commit

A4.py

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+from PyPDF2 import PdfReader, PdfWriter
+
+# A4 dimensions in points (1mm = 2.83465 points)
+A4_WIDTH = 210 * 2.83465   # ≈ 595.276 pts (width)
+A4_HEIGHT = 297 * 2.83465  # ≈ 841.89 pts (height)
+
+def fit_to_a4(input_pdf_path, output_pdf_path):
+    reader = PdfReader(input_pdf_path)
+    writer = PdfWriter()
+
+    for page in reader.pages:
+        # Get original page dimensions
+        orig_width = float(page.mediabox.width)
+        orig_height = float(page.mediabox.height)
+
+        # Calculate scaling factor to fit A4 (preserve aspect ratio)
+        scale = min(A4_WIDTH / orig_width, A4_HEIGHT / orig_height)
+
+        # Scale the page content
+        page.scale_by(scale)
+
+        # Calculate offsets to center on A4
+        new_width = orig_width * scale
+        new_height = orig_height * scale
+        x_offset = (A4_WIDTH - new_width) / 2
+        y_offset = (A4_HEIGHT - new_height) / 2
+
+        # Set A4 mediabox and shift content
+        page.mediabox.lower_left = (x_offset, y_offset)
+        page.mediabox.upper_right = (x_offset + new_width, y_offset + new_height)
+
+        writer.add_page(page)
+
+    # Save the output PDF
+    with open(output_pdf_path, "wb") as out_file:
+        writer.write(out_file)
+
+
+
+# Example usage
+fit_to_a4(r"z:\Dropbox\Ordinace\Dokumentace_ke_zpracování\untitled.pdf", r"z:\Dropbox\Ordinace\Dokumentace_ke_zpracování\output_a4.pdf")
+print("PDF adjusted to A4 portrait successfully!")