Convert PowerPoint (.pptx) to Markdown — free online tool
Convert PowerPoint (.pptx) files to Markdown. Each slide becomes a `## Slide N` heading with body text, bullet lists, and speaker notes preserved. Runs entirely in your browser — safe for confidential decks.
Drop a PowerPoint file (.pptx) here, or click to select
or
Supported formats: .pptx · multiple files supported
What the PowerPoint to Markdown Converter can do
This free online tool converts PowerPoint (.pptx) files to Markdown entirely inside your browser. Your presentation is never uploaded, and each slide's text, bullet lists, and speaker notes are preserved under `## Slide N` headings.
Supported PowerPoint format (.pptx)
Supports .pptx files from PowerPoint 2007 and later. For legacy .ppt files, please re-save as .pptx in PowerPoint before converting.
Preserved after conversion: slide titles, body text, bullet lists, speaker notes
Each slide becomes a `##` heading. Body text, bullet lists with indentation, bold/italic formatting, and speaker notes are all carried into Markdown — perfect for RAG preprocessing.
Not reflected in Markdown: images, shapes, charts, animations
Images, shapes, SmartArt, charts, and animations cannot be expressed in plain Markdown and are skipped. Anything you want preserved should be entered as text in the slide body, not as an image.
Three steps to convert a PowerPoint (.pptx) file to Markdown
- Drag and drop your .pptx file, or click to select one.
- Press the "Convert to Markdown" button and check each slide in the preview pane.
- Copy to clipboard, or download the .md file.
Your PowerPoint file is never sent to any server
How in-browser conversion works (officeparser)
This tool uses the officeparser library to parse the .pptx directly in your browser and convert it to Markdown in JavaScript. No file content is ever sent to sakutto servers.
Why it's safe for confidential presentations
Because nothing is transmitted, you can safely convert confidential business plans, sales decks, or HR presentations. Close the tab and no data remains.
Use cases for PowerPoint to Markdown conversion
- Turning a slide deck into a blog post on note, Zenn, or Medium by using the slide structure as a Markdown outline.
- Passing slide content to ChatGPT or Claude as clean Markdown to reduce token usage and improve summarization or translation.
- Importing presentation knowledge into Obsidian or Notion as Markdown notes, slide by slide.
Converting other formats to Markdown
- Convert PDF to Markdown (PDF to Markdown converter)
- Convert Word (.docx) to Markdown (Word to Markdown converter)
- Convert Excel (.xlsx) to a Markdown table (Excel to Markdown converter)
- Convert HTML to Markdown (HTML to Markdown converter)
- Convert a web page URL to Markdown (URL to Markdown converter)
- Convert any file to Markdown (File to Markdown hub)
Why PowerPoint to Markdown Converter on sakutto is safe
Many online tools upload your files to external servers for processing. This tool never sends your PowerPoint files (.pptx) to any server — everything is processed entirely in your browser.
* Some AI-powered tools require server-side processing. Tools that send data to a server will always notify you beforehand.
| Comparison | Typical online tools | sakutto |
|---|---|---|
| Where data is sent | Uploaded to external servers | Nowhere — processed in your browser |
| Data leak risk | Risk during transfer and server storage | No risk — no network transfer occurs |
| External traffic | File data travels over the internet | No file data appears in network logs |
| Offline use | Not possible (server required) | Works offline after initial load |
How browser-based processing works
- WebAssembly (WASM): Processes PowerPoint files (.pptx) in your browser at near-native speed. No server communication occurs.
- Web Workers: Runs on a background thread separate from the main thread, so your browser stays responsive during processing.
- After processing, your browser automatically frees the data from memory. No PowerPoint files (.pptx) remains outside your device.
For IT security teams: How to verify
You can verify that sakutto never sends your PowerPoint files (.pptx) externally by checking the Network tab in your browser's DevTools while using the tool. You'll see that no requests involving your PowerPoint files (.pptx) are made. This can also serve as documentation for your IT security team.
Frequently asked questions about the PowerPoint to Markdown Converter
Can I convert legacy .ppt files?
Currently only .pptx (PowerPoint 2007 and later) is supported. For legacy .ppt files, please save them as .pptx in PowerPoint first.
What happens to images and shapes inside slides?
Images, shapes, charts, and SmartArt cannot be expressed in plain Markdown and are skipped. Only text content is extracted under each `## Slide N` heading.
Are speaker notes converted as well?
Yes. When a slide has speaker notes, they appear under a `### Speaker Notes` heading right below the slide body in the Markdown output.
Are my files stored anywhere?
No. All processing happens inside your browser. Neither the .pptx file nor the Markdown output is sent to or stored on sakutto servers.
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