Node.js
Read local files, uploads, S3/R2 objects, and other byte sources.
POTX to Markdown in your browser.
Convert POTX files to GitHub-Flavored Markdown directly in your browser.
Your POTX stays on your device. No upload. No account.
- npm @mdgate/pptx
- license MIT
- runtime Node.js · Edge · browser
Starting local converter
Use POTX to Markdown in your app
$
npm install @mdgate/pptx
import { toMarkdown } from '@mdgate/pptx';
const markdown = await toMarkdown(bytes);Pure TypeScript, Node.js, Cloudflare Workers, Edge, Browser, No Python, No native addons, No WASM, Zero third-party runtime dependencies
How POTX to Markdown works
- POTX
- slide XML parsing
- titles · body · notes · tables
- GitHub-Flavored Markdown
Built for JavaScript runtimes
Cloudflare Workers
Parse PowerPoint files directly inside Workers without PowerPoint or a native binary.
Browser
Convert POTX locally without uploading it to a server.
Edge
Run the same TypeScript converter in compatible Edge runtimes.
What @mdgate/pptx extracts
- Slide titles and body text
- Lists
- Tables
- Speaker notes as a block quote after each slide
- Charts and diagrams as readable blocks
- Slide, layout, and master text cascade
Why @mdgate/pptx
Runs where your JavaScript runs
No separate processing service. The converter is TypeScript you can call from Node.js, Cloudflare Workers, Edge runtimes, and browsers.
Local conversion
POTX files can stay inside your application or browser.
Content detection
Recognizes POTX files from their contents, not only the filename.
Deterministic parsing
The same POTX file produces repeatable Markdown without model inference.
Small runtime surface
No Python. No native addons. No WASM. No third-party runtime dependencies.
POTX for AI agents
Turn POTX files into content your agent can actually work with.
- POTX
- Markdown
-
- grep
- search
- chunk
- index
- cache
- cite
- reason
Need more than POTX?
One format
@mdgate/pptx
Your own set
@mdgate/core
+ @mdgate/pptx
+ @mdgate/pdf
+ @mdgate/docx
Broad file support
@mdgate/converters
FAQ
Can I convert POTX to Markdown without uploading it?
Yes. POTX files can be converted locally in the browser.
Does POTX to Markdown work in Cloudflare Workers?
Yes. @mdgate/pptx runs directly in Cloudflare Workers.
Does it require Python?
No.
Does it require native addons or WASM?
No.
What does it output?
GitHub-Flavored Markdown.
Can I install only the POTX converter?
Yes. Install @mdgate/pptx instead of the complete converter set.
Does this convert .ppt too?
No. Binary PowerPoint 97-2003 files use @mdgate/ppt.