gbb-pptx

GBB PPTX Deck Generator Skill

Renamed from pptx in v2.0.0 to avoid name collision with the upstream Anthropic-style pptx skill (which focuses on reading/editing existing .pptx files via markitdown). This GBB variant generates fresh dark/light-themed pitch decks from Markdown using python-pptx. Both can coexist at user scope — invoke this one with the gbb-pptx / "GBB deck" / "dark-themed deck" trigger phrases.

Generate professional, dark-themed PowerPoint (PPTX) presentations using python-pptx.

When to Use

Invoke this skill when the user asks to:

• Create a PowerPoint / PPTX presentation
• Generate a slide deck
• Convert markdown content into slides
• Build a pitch deck or report as PPTX

Prerequisites

pip install python-pptx

How It Works

1. Define slide content — either from user instructions or by reading a markdown file
2. Generate a Python script using the patterns below
3. Run the script to produce the .pptx file

Core Patterns

Slide Setup (16:9 Widescreen)

from pptx import Presentation
from pptx.util import Inches, Pt
from pptx.dml.color import RGBColor
from pptx.enum.text import PP_ALIGN
from pptx.enum.shapes import MSO_SHAPE

prs = Presentation()
prs.slide_width = Inches(13.333)   # 16:9
prs.slide_height = Inches(7.5)

Background Color

def set_bg(slide, color):
    fill = slide.background.fill
    fill.solid()
    fill.fore_color.rgb = color

Text Box

def text_box(slide, left, top, width, height, text,
             font_size=14, color=RGBColor(0xF1,0xF5,0xF9),
             bold=False, align=PP_ALIGN.LEFT, font="Segoe UI"):
    box = slide.shapes.add_textbox(
        Inches(left), Inches(top), Inches(width), Inches(height))
    box.text_frame.word_wrap = True
    p = box.text_frame.paragraphs[0]
    p.text = text
    p.font.size = Pt(font_size)
    p.font.color.rgb = color
    p.font.bold = bold
    p.font.name = font
    p.alignment = align
    return box