Shell Script to Bulk Replace Fonts in PowerPoint for Mac

#!/bin/bash

set -eu

TMP_DIR="$(mktemp -d)"
echo "Created temporary directory: $TMP_DIR"
trap 'rm -rf $TMP_DIR' EXIT

for PPTX_FILE in *.pptx; do
    if [ -e "$PPTX_FILE" ]; then
        echo "Processing $PPTX_FILE..."

        cp "$PPTX_FILE" "$TMP_DIR"
        echo "Copied $PPTX_FILE to temporary directory."

        pushd "$TMP_DIR"
        echo "Changed directory to temporary directory."

        unzip "$PPTX_FILE"
        echo "Unzipped $PPTX_FILE."

        rm "$PPTX_FILE"
        echo "Removed original $PPTX_FILE from temporary directory."

        # Font replacement
        find "./ppt/slides/"*.xml | xargs -I{} sed -i '' -e 's/typeface="[^"]*"/typeface="M PLUS 1p"/g' "{}"
        echo "Replaced typeface attributes with 'M PLUS 1p' in slide XML files."

        zip -0 -r "$PPTX_FILE" ./* # do not compress (-0)
        echo "Zipped modified files into $PPTX_FILE."

        popd
        echo "Returned to original directory."

        cp "$TMP_DIR/$PPTX_FILE" "$PPTX_FILE"
        echo "Copied modified $PPTX_FILE back to original location."
    else
        echo "File not found: $PPTX_FILE"
    fi
done

echo "Script execution completed."

import os
from pptx import Presentation

def get_used_fonts(ppt_file):
    prs = Presentation(ppt_file)
    used_fonts = set()

    for slide in prs.slides:
        for shape in slide.shapes:
            if shape.has_text_frame:
                for paragraph in shape.text_frame.paragraphs:
                    for run in paragraph.runs:
                        used_fonts.add(run.font.name)

            if shape.has_table:
                for row in shape.table.rows:
                    for cell in row.cells:
                        for paragraph in cell.text_frame.paragraphs:
                            for run in paragraph.runs:
                                used_fonts.add(run.font.name)

    return used_fonts

def replace_fonts(ppt_file, new_font):
    prs = Presentation(ppt_file)

    for slide in prs.slides:
        for shape in slide.shapes:
            if shape.has_text_frame:
                for paragraph in shape.text_frame.paragraphs:
                    for run in paragraph.runs:
                        run.font.name = new_font

            if shape.has_table:
                table = shape.table

                for row in table.rows:
                    for cell in row.cells:
                        for paragraph in cell.text_frame.paragraphs:
                            for run in paragraph.runs:
                                run.font.name = new_font

    prs.save(ppt_file)

def main():
    current_dir = os.path.dirname(os.path.abspath(__file__))
    ppt_files = [f for f in os.listdir(current_dir) if f.endswith('.pptx')]

    if not ppt_files:
        print("No PowerPoint files found in the current directory.")
        return

    print("Found PowerPoint files:")
    for ppt_file in ppt_files:
        print(ppt_file)

        used_fonts = get_used_fonts(os.path.join(current_dir, ppt_file))
        print(f"Fonts used in {ppt_file}:")
        for font in used_fonts:
            print(f"- {font}")
        print()

    new_font = input("Enter the font name to replace all fonts with (default: 'M PLUS 1p'): ")
    if not new_font:
        new_font = 'M PLUS 1p'

    print(f"\nReplacing all fonts with '{new_font}' in all PowerPoint files...")
    for ppt_file in ppt_files:
        replace_fonts(os.path.join(current_dir, ppt_file), new_font)

    print("\nFont replacement completed.")

if __name__ == '__main__':
    main()

pip install python-pptx