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pptx PowerPoint presentation generation using python-pptx. Create slides from Claude output, data analysis, or structured content. Covers slide templates, shapes, charts, tables, and themed presentations. Use for generating .pptx files programmatically.
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name pptx description PowerPoint presentation generation using python-pptx. Create slides from Claude output, data analysis, or structured content. Covers slide templates, shapes, charts, tables, and themed presentations. Use for generating .pptx files programmatically. version 1.0.0 model sonnet invoked_by both user_invocable true tools ["Bash","Read","Write","Edit"] best_practices ["Use slide layouts from presentation template for consistent styling","Store all text in placeholder shapes, never in raw textboxes","Use Pt() and Emu() for all measurements — never raw integers","Set slide dimensions before adding content","Use master slides for branding consistency"] error_handling graceful streaming not_applicable verified true lastVerifiedAt "2026-03-15T00:00:00.000Z" source builtin trust_score 100 provenance_sha 2b45b7e9622fd3e7
PowerPoint Generation (pptx)
Overview
Generate .pptx files programmatically using python-pptx. Convert Claude output, data analysis results, research reports, and structured data into polished PowerPoint presentations.
When to Invoke
Skill({ skill: 'pptx' }) when:
User asks to "create a presentation", "generate slides", or "make a PowerPoint"
Converting a report, analysis, or structured document into slide format
Generating recurring report slides from data
Creating template-based presentations programmatically
Installation
pip install python-pptx
uv add python-pptx
Quick Start
from pptx import Presentation
from pptx.util import Inches, Pt, Emu
from pptx.enum.text import PP_ALIGN
from pptx.dml.color import RGBColor
prs = Presentation()
prs.slide_width = Inches(13.33 )
prs.slide_height = Inches(7.5 )
title_layout = prs.slide_layouts[0 ]
slide = prs.slides.add_slide(title_layout)
title = slide.shapes.title
subtitle = slide.placeholders[1 ]
title.text = "Q1 2026 Business Review"
subtitle.text = "Prepared by Claude Agent"
content_layout = prs.slide_layouts[1 ]
slide = prs.slides.add_slide(content_layout)
slide.shapes.title.text = "Key Findings"
tf = slide.placeholders[1 ].text_frame
tf.text = "Revenue grew 23% YoY"
p = tf.add_paragraph()
p.text = "Customer retention at 94%"
p.level = 1
prs.save("presentation.pptx" )
Slide Layouts Reference Standard layouts available in default template:
Index Name Use For 0 Title Slide Opening slide 1 Title and Content Main content slides 2 Title and Two Content Side-by-side comparison 5 Title Only Charts or images with title 6 Blank Custom layouts
for i, layout in enumerate (prs.slide_layouts):
print (f"{i} : {layout.name} " )
Text Formatting from pptx.util import Pt
from pptx.dml.color import RGBColor
from pptx.enum.text import PP_ALIGN
def format_paragraph (paragraph, text, size=18 , bold=False , color=None , align=PP_ALIGN.LEFT ):
run = paragraph.add_run()
run.text = text
font = run.font
font.size = Pt(size)
font.bold = bold
if color:
font.color.rgb = RGBColor(*color)
paragraph.alignment = align
return run
tf = slide.placeholders[1 ].text_frame
tf.clear()
p = tf.paragraphs[0 ]
format_paragraph(p, "Important Metric: 94%" , size=24 , bold=True , color=(0x1F , 0x49 , 0x7D ))
Tables from pptx.util import Inches
def add_table_slide (prs, title, headers, rows ):
"""Add a slide with a formatted table."""
slide = prs.slides.add_slide(prs.slide_layouts[5 ])
slide.shapes.title.text = title
left = Inches(0.5 )
top = Inches(1.5 )
width = Inches(12.3 )
height = Inches(0.8 * (len (rows) + 1 ))
table = slide.shapes.add_table(
len (rows) + 1 , len (headers), left, top, width, height
).table
for col_idx, header in enumerate (headers):
cell = table.cell(0 , col_idx)
cell.text = header
cell.text_frame.paragraphs[0 ].runs[0 ].font.bold = True
for row_idx, row in enumerate (rows):
for col_idx, value in enumerate (row):
table.cell(row_idx + 1 , col_idx).text = str (value)
return slide
headers = ["Product" , "Revenue" , "Growth" ]
rows = [
("Widget A" , "$1.2M" , "+23%" ),
("Widget B" , "$890K" , "+15%" ),
("Widget C" , "$450K" , "-5%" ),
]
add_table_slide(prs, "Revenue by Product" , headers, rows)
Charts from pptx.chart.data import ChartData
from pptx.enum.chart import XL_CHART_TYPE
from pptx.util import Inches
def add_bar_chart (slide, title, categories, series_name, values ):
"""Add a bar chart to a slide."""
chart_data = ChartData()
chart_data.categories = categories
chart_data.add_series(series_name, values)
chart = slide.shapes.add_chart(
XL_CHART_TYPE.COLUMN_CLUSTERED,
Inches(1 ), Inches(1.5 ),
Inches(11 ), Inches(5.5 ),
chart_data
).chart
chart.has_title = True
chart.chart_title.text_frame.text = title
chart.has_legend = False
return chart
slide = prs.slides.add_slide(prs.slide_layouts[5 ])
slide.shapes.title.text = "Monthly Revenue"
add_bar_chart(
slide,
"Revenue by Month (2026)" ,
["Jan" , "Feb" , "Mar" ],
"Revenue ($K)" ,
(450 , 520 , 610 )
)
Images from pptx.util import Inches
def add_image_slide (prs, title, image_path, caption=None ):
slide = prs.slides.add_slide(prs.slide_layouts[5 ])
slide.shapes.title.text = title
pic = slide.shapes.add_picture(
image_path,
left=Inches(1.5 ),
top=Inches(1.5 ),
width=Inches(10 ),
)
if caption:
txBox = slide.shapes.add_textbox(
Inches(1.5 ), Inches(6.8 ), Inches(10 ), Inches(0.5 )
)
tf = txBox.text_frame
tf.text = caption
tf.paragraphs[0 ].alignment = PP_ALIGN.CENTER
return slide
Agent Workflow: Claude Output → Slides import json
from pptx import Presentation
from pptx.util import Inches, Pt
def claude_output_to_slides (slide_data: list [dict ], output_path: str ):
"""
Convert Claude structured output to a PowerPoint file.
Expected slide_data format:
[
{"type": "title", "title": "...", "subtitle": "..."},
{"type": "content", "title": "...", "bullets": ["...", "..."]},
{"type": "table", "title": "...", "headers": [...], "rows": [[...], ...]},
]
"""
prs = Presentation()
prs.slide_width = Inches(13.33 )
prs.slide_height = Inches(7.5 )
for slide_spec in slide_data:
if slide_spec["type" ] == "title" :
slide = prs.slides.add_slide(prs.slide_layouts[0 ])
slide.shapes.title.text = slide_spec["title" ]
if "subtitle" in slide_spec:
slide.placeholders[1 ].text = slide_spec["subtitle" ]
elif slide_spec["type" ] == "content" :
slide = prs.slides.add_slide(prs.slide_layouts[1 ])
slide.shapes.title.text = slide_spec["title" ]
tf = slide.placeholders[1 ].text_frame
tf.text = slide_spec["bullets" ][0 ]
for bullet in slide_spec["bullets" ][1 :]:
p = tf.add_paragraph()
p.text = bullet
p.level = 1
elif slide_spec["type" ] == "table" :
add_table_slide(
prs,
slide_spec["title" ],
slide_spec["headers" ],
slide_spec["rows" ]
)
prs.save(output_path)
return output_path
slide_data = [
{"type" : "title" , "title" : "Q1 2026 Report" , "subtitle" : "Generated by Claude" },
{"type" : "content" , "title" : "Key Highlights" , "bullets" : [
"Revenue up 23% YoY" ,
"New customer acquisition: +450" ,
"NPS score improved to 72" ,
]},
{"type" : "table" , "title" : "Regional Performance" ,
"headers" : ["Region" , "Revenue" , "Target" , "Variance" ],
"rows" : [["North" , "$2.1M" , "$2.0M" , "+5%" ], ["South" , "$1.8M" , "$2.0M" , "-10%" ]]},
]
claude_output_to_slides(slide_data, "q1-report.pptx" )
Using Existing Templates
prs = Presentation("company-template.pptx" )
slide = prs.slides.add_slide(prs.slide_layouts[1 ])
slide.shapes.title.text = "New Content Slide"
Output Location Save generated .pptx files to:
User-specified path, or
.claude/context/artifacts/ for agent-generated presentations
Anti-Patterns
Never use raw integer values for sizes — always Pt(), Inches(), or Emu()
Never add text directly to slide (use placeholder shapes for layout consistency)
Never hardcode colors without using RGBColor — inconsistent on dark/light themes
Never forget tf.clear() before setting text on a reused placeholder
Never use slide_layouts[6] (blank) for content — placeholder positions will be missing
Related Skills
xlsx — Excel spreadsheet generation (tabular data export)diagram-generator — Mermaid diagrams (for embedding architecture diagrams)markitdown-converter — Convert existing files to Markdown for Claude processing
Memory Protocol (MANDATORY) Before starting: Read .claude/context/memory/learnings.md
After completing: Record any python-pptx version compatibility issues or slide layout gotchas.
ASSUME INTERRUPTION: Your context may reset. If it's not in memory, it didn't happen.
