m1s2-eng-presentation/presentation.md

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title	author	description	keywords	header	footer	marp	theme	paginate	transition	size	lang	math
Privacy by design: DIY Marp(X) AI presentations without sending data to third parties	R.Viton	Privacy by design: DIY Marp(X) AI presentations without sending data to third parties		Privacy by design: DIY Marp(X) AI presentations without sending data to third parties	2026-06-24	true	gödel	true	cover	16:9	de	katex

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Privacy by design: DIY Marp(X) AI presentations without sending data to third parties

... and why you should use them too!

Romane Viton

2026-05-24

DFI-203, htw saar

---

A few questions first

• Who here would consider themselves a developer ?
• Experience with code editors / IDEs ?
• More comfortable with editor than with other software ?
• Does text just feel faster/more efficient at this point?

---

  Markdown

(It's everywhere - you've most likely dealt with it at least once)

# Main title
## Heading 2 - You can make:

- *italic text*
- **bold text**
- ~~strikethrough~~
- lists
- [links](http://example.com)
- ![images](image_name_here)
- > Quotes

---

Why not write presentations as text ?

Introducing:  (Yuki Hattori)

• Markdown presentation ecosystem
• Comes as a command line tool or a VSCode editor extension
• Technically Just A Web Page™️ \implies can write HTML/CSS if you want to customize
• MarpX (Paolo Cunha) offers high quality ready-to-use themes
• If you know Markdown/HTML/CSS: No need to learn (yet another) tool!

---

Collaborating with others / keeping track of versions ?

"Well surely the editor can't do that ", I hear you say

• All the presentations are text-based versions of a file tree
• We need a tool to maintain versions of a text-based file tree...
• Ever heard of git?
• We already have a tool to collaborate on versions of text-based projects!

---

How do we make sure data is safe from big companies?

• there are online platforms like GitHub for this (but: this defeats the whole purpose)
• it's 2026, and servers are pretty cheap
• you can set up your own infrastructure in an afternoon

---

One step further: hosting services on your own infrastructure

• I won't tell you how to set it up (plenty of guides online)
• Here are some tools I'm using for my personal setup:

Requirement	Possible tool
Server	Any VPS will do
Simple software deployment	Docker
HTTPS support	Caddy
Git collaboration	Gitea
Presentation hosting	Git-Pages
Automated deployment	Gitea Actions

---

...isn't this really expensive, though?

• Not really!
• Domain name: ~10 EUR/year
• 24/7 VPS (200GB Storage, 6 vCPUs, 12GB RAM): 6.72 EUR/month
  • Also hosting other services on it and not even at capacity
  • I use Contabo, but Hetzner/OVH/Hostinger also work
• it's all yours, no need to worry about your data being accessed by third parties!
• Privacy does have a price, but so does exposing your personal data
  • Which one are you willing to pay?

---

...wasn't this supposed to integrate LLMs as well?

• It can be done as well!
• Head start when hosting models: Ollama (from Ollama Inc.)
• Automatically handles the download and execution of open models locally
• 💡 Works even better when checking content, since everything is text-based !
• We can integrate this into our IDE of choice and never have to worry about our data being sent to anyone!

---

Pros and cons

Pros

• Enhanced privacy
• Very flexible if you know webdev
• No need to leave the traditional dev toolset
• Open-Source community tools, no dependence on a specific company

Cons

• Steep learning curve
• Hard to collaborate with non-technical people
• Need to be comfortable with text-based tools
• Theme can be limiting if not chosen correctly

---

Conclusion

• Presentation software and AI often feels "unreachable" and only hostable if you're a company and have the resources for it
• It doesn't have to be that way!
• Don't contribute to that narrative \implies De-mystify the topic!
• Your data belongs to you; own it!

---

References

• Marp
• MarpX Themes
• []

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This presentation is online too!

PDF

HTML

Repository

wget https://pages.ct.cozytren.ch/m1s2-eng-presentation/presentation.pdf
git clone https://gitea.ct.cozytren.ch/romane/m1s2-eng-presentation