pptx-slide-copier 0.1.0

PowerPoint slide copier utility with deep copying of shapes, images, and formatting

pptx-slide-copier

PowerPoint slide copier utility - Deep copy slides between presentations while preserving all formatting, images, and layouts.

Features

• Deep copy slides from one PowerPoint presentation to another
• Preserves all formatting, fonts, colors, and styles
• Copies images with correct relationship IDs
• Matches slide layouts via slide masters (supports custom layouts)
• Compatible with python-pptx 1.0.2+ API
• Handles themes and layout preservation

Installation

pip install pptx-slide-copier

For development:

git clone https://github.com/SpringMT/pptx-slide-copier.git
cd pptx-slide-copier
pip install -e ".[dev]"

Quick Start

from pptx import Presentation
from pptx_slide_copier import SlideCopier

# Open source and target presentations
source_prs = Presentation("source.pptx")
target_prs = Presentation("target.pptx")

# Copy slide 0 from source to target
copied_slide = SlideCopier.copy_slide(source_prs, 0, target_prs)

# Save the target presentation
target_prs.save("output.pptx")

Usage

Basic Slide Copying

from pptx import Presentation
from pptx_slide_copier import SlideCopier

# Load presentations
source = Presentation("template.pptx")
target = Presentation()  # Create new presentation

# Copy first slide (index 0)
SlideCopier.copy_slide(source, 0, target)

# Copy multiple slides
for i in range(3):
    SlideCopier.copy_slide(source, i, target)

target.save("output.pptx")

Copying to Presentation Based on Template

For best results (to preserve themes and layouts), create the target presentation from the same template:

from pptx import Presentation
from pptx_slide_copier import SlideCopier

# Load template
template = Presentation("template.pptx")

# Create target from same template to preserve theme
target = Presentation("template.pptx")

# Remove all slides from target
while len(target.slides) > 0:
    rId = target.slides._sldIdLst[0].rId
    target.part.drop_rel(rId)
    del target.slides._sldIdLst[0]

# Now copy slides
SlideCopier.copy_slide(template, 0, target)

target.save("output.pptx")

How It Works

Deep Copying at XML Level

The library uses deepcopy at the XML element level to ensure all shape properties, formatting, and attributes are preserved:

from copy import deepcopy
new_element = deepcopy(shape.element)
dest_slide.shapes._spTree.insert_element_before(new_element, "p:extLst")

Image Relationship Mapping

Images are copied with proper relationship ID mapping to ensure they display correctly:

1. Copy image data from source slide
2. Add image to target presentation
3. Map old relationship IDs to new ones
4. Update XML references in copied shapes

Layout Matching

Slide layouts are matched via slide masters to support custom layouts:

1. Find source slide's layout and master
2. Match master by name in target presentation
3. Find matching layout within the matched master
4. Fall back to index-based matching if name match fails

Technical Details

• python-pptx 1.0.2+ compatibility: Handles both old and new API for get_or_add_image_part()
• XML namespaces: Correctly handles presentationml, drawingml, and relationship namespaces
• Theme preservation: Works best when target presentation is created from same template
• Error handling: Gracefully continues if individual shapes or images fail to copy

Testing

pytest

With coverage:

pytest --cov=pptx_slide_copier --cov-report=html

License

MIT

Author

SpringMT