Does it support editing existing presentations?

Yes, it can unpack .pptx archives, modify the underlying XML (OOXML), and repack them while providing validation to ensure file integrity.

How does it handle complex design elements?

The skill includes specific guidance on typography, color theory, and layout hierarchy, and supports rasterizing gradients or icons using Sharp for better compatibility.

Is it possible to extract speaker notes and comments?

Yes, by accessing the raw XML file structure (e.g., notesSlides and modernComment files), Claude can read, analyze, or modify speaker notes and comments.

Can this skill create slides from scratch?

Yes, it uses a mandatory html2pptx workflow to convert HTML-based designs into professional PowerPoint presentations with accurate positioning.

Can I preview slides before finalizing them?

The skill features a visual validation step that generates thumbnail grids, allowing you to check for text cutoff, overlap, or contrast issues before saving.

PowerPoint Presentation Expert

Name: PowerPoint Presentation Expert
Author: billlzzz18

bybilllzzz18

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Content Management

Automates the creation, editing, and structural analysis of PowerPoint (.pptx) presentations using HTML-to-PPTX conversion and raw XML manipulation.

About

The pptx skill provides Claude with a comprehensive framework for handling Microsoft PowerPoint files, ranging from simple text extraction to complex layout design. It utilizes a sophisticated workflow that converts HTML and CSS into professional slides via html2pptx, while also offering low-level OOXML editing capabilities for modifying existing presentations. With built-in design principles, curated color palettes, and automated thumbnail generation for visual validation, this skill allows users to programmatically generate, rebrand, or audit presentation decks with high precision.

Key Features

1 GitHub stars
Raw OOXML unpacking and repacking for deep XML-level editing
Curated design system with web-safe fonts and professional color palettes
Visual validation through automated thumbnail grid generation
HTML-to-PPTX conversion for flexible and precise slide layout design
Automated text extraction and metadata analysis using MarkItDown

Use Cases

Generating automated business reports and pitch decks from data sources
Programmatically updating brand styles, speaker notes, and comments across multiple decks
Analyzing existing templates to extract and replicate complex layout structures

About

Key Features

1 GitHub stars
Raw OOXML unpacking and repacking for deep XML-level editing
Curated design system with web-safe fonts and professional color palettes
Visual validation through automated thumbnail grid generation
HTML-to-PPTX conversion for flexible and precise slide layout design
Automated text extraction and metadata analysis using MarkItDown

Use Cases

Generating automated business reports and pitch decks from data sources
Programmatically updating brand styles, speaker notes, and comments across multiple decks
Analyzing existing templates to extract and replicate complex layout structures