How does Claude edit existing PowerPoint files?

Claude uses a specialized workflow to unpack the .pptx ZIP archive, modify the underlying XML (OOXML) files, and then repack them into a valid presentation after validation.

Can I use custom branding with this skill?

Yes, the skill includes tools to analyze existing templates for colors and fonts, and supports a design-first approach for creating brand-aligned content from scratch.

What is the html2pptx workflow?

It is a method where Claude designs slides using HTML/CSS for precise positioning and visual styling before converting them into native PowerPoint elements.

Does it support extracting speaker notes and comments?

Yes, by accessing the raw XML structure in the ppt/notesSlides and ppt/comments directories, Claude can read and modify content that standard text extractors often miss.

How do I verify if the generated slides look correct?

The skill includes a visual validation step that generates a thumbnail grid of all slides, allowing you to check for text overlaps, contrast issues, or layout errors.

PPTX Presentation Expert

Name: PPTX Presentation Expert
Author: lngyneric

bylngyneric

0•

生産性とワークフロー

Manages the full lifecycle of PowerPoint presentations, including programmatic creation, deep XML editing, and content analysis.

The PPTX skill empowers Claude to interact directly with PowerPoint files by treating them as structured data. It provides a robust workflow for extracting text via markdown conversion, performing granular edits through OOXML manipulation, and generating professional-grade presentations from scratch using an HTML-to-PPTX pipeline. With built-in design principles, automated thumbnail validation, and template support, it ensures high-quality visual outputs and precise control over slide layouts, speaker notes, and complex formatting elements.

主な機能

010 GitHub stars

02Convert .pptx files to Markdown for rapid text extraction and content analysis

03Unpack and edit raw OOXML for precise control over layouts, comments, and speaker notes

04Generate new presentations from HTML/CSS with professional color palettes and design logic

05Automated visual validation using thumbnail generation to detect layout and contrast issues

06Template-based creation to maintain brand consistency and reuse existing slide structures

ユースケース

01Automating the creation of data-driven reporting decks from structured HTML summaries

02Batch-editing existing presentations to update branding, fonts, or specific slide content via XML

03Extracting and analyzing speaker notes or modern comments from large presentation archives

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add lngyneric/my-notebook-github pptx

For use in Claude.ai and ChatGPT

Download Skill