Page-by-page grounding
Every explanation stays attached to the page it describes, so you can compare the source and the explanation directly.
For international students
Understand every lecture slide, in your language.
Upload a PDF or PPTX. UnderSlide turns each page into a grounded explanation you can edit, annotate, revisit, and ask questions about.
Your lecture files stay private to your account.
Lecture slide
Page explanation
Why data documentation matters
Documentation makes research data findable, understandable, and reusable. The slide groups this idea around the FAIR principles and shows that metadata is part of the research record, not an afterthought.
Key concept
FAIR: Findable, Accessible, Interoperable, Reusable
Ask about this slide
Built for understanding
More than slide translation
UnderSlide keeps the original page visible while it explains the relationships, visuals, formulas, and terminology that make the page difficult.
Learn in your language
Choose the explanation language that helps you think clearly while important source terms remain available.
Make it your own
Edit explanations, highlight the slide, add notes, and return to your questions without losing the original AI version.
Real lecture material
See the slide and the reasoning together
The viewer is designed for active study: the source stays on screen, the explanation is structured for scanning, and every study item can lead back to its page.
Open lecture slide · GermanPage 6 of 20
The slide maps the forms documentation can take
The sequence moves from lightweight files and versioning to structured dictionaries, codebooks, lab notebooks, data journals, and specialist tools. The point is not that one format replaces the others, but that the right form depends on what future readers need to recover.
Why this matters
A README can explain the project at a high level, while a data dictionary defines fields precisely and versioning preserves change history.
Open slide: Coffee Lecture Slides: Datendokumentation, Roman Gerlach, Annett Schröter and Kevin Lang (2021), CC0 1.0. The authors and institutions do not endorse UnderSlide.
A quiet workflow
From upload to a study-ready lecture
- 01
Upload
Add a private PDF or PPTX and choose the language you want to study in.
- 02
Follow progress
Open pages as they finish while the rest of the deck continues processing.
- 03
Understand and ask
Read, annotate, edit, and ask questions about a page or the whole lecture.
One lecture, five views
Move from comprehension to recall
Page explanations are only the start. UnderSlide keeps every review item connected to the source pages that support it.
01Page explanations
02Lecture logic
03Exam review
04Flashcards
05Self-test
Private by design
Your coursework is not a public content library
Lecture files and generated study material are scoped to your account. UnderSlide does not publish user uploads or present itself as a university service.
- Private storage and short-lived media links
- Clear separation between AI output and your edits
- Delete your own deck files and learning content
- Built for study support, not academic misconduct
Questions
What students usually want to know
Does UnderSlide make a new presentation?
No. UnderSlide explains the lecture material you upload. It is a study tool, not an AI presentation maker.
Can I upload PowerPoint files?
Yes. The first production formats are PDF and PPTX. Pages are rendered for visual explanation while the original file remains private.
Can I ask questions about one page?
Yes. Page questions stay connected to that slide so you can find the conversation again while reviewing the lecture.
Are explanations guaranteed to be perfect?
No AI explanation is guaranteed perfect. UnderSlide keeps the source visible, applies validation and retry gates, and lets you edit or report a page.