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Understand your lecture slides, in your language.

Upload a PDF or PPTX. See each original slide beside an editable explanation in the language you understand best.

Upload your slides
PDF / PPTXYour lecture files stay private to your account.
Interactive sample
Page-by-page grounding

Every explanation stays attached to the page it describes, so you can compare the source and the explanation directly.

Opening lecture

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.

See the slide and the explanation together

UnderSlide keeps the original page visible while it explains the relationships, visuals, formulas, and terminology that make the page difficult.

Page explanationPage-by-page grounding
Dokumentationsformen
Page 6 of 20
Dokumentationsformen
Original slidePage 6 of 20
Page explanationSaved

为什么数据文档很重要

数据文档让研究资料更容易被找到、理解和重复使用。这一页围绕 FAIR 原则组织内容,强调元数据本身就是研究记录的一部分,而不是最后补上的附件。

关键概念FAIR:可发现、可访问、可互操作、可重用

Move from comprehension to recall

Page explanations are only the start. UnderSlide keeps every review item connected to the source pages that support it.

Page 6 of 20DokumentationsformenDokumentationsformen
Current pagePage explanations
Whole deckLecture logic
Whole deckExam review
Whole deckFlashcards
Whole deckSelf-test

From upload to a study-ready lecture

  1. 01

    Upload

    Add a private PDF or PPTX and choose the language you want to study in.

  2. 02

    Follow progress

    Open pages as they finish while the rest of the deck continues processing.

  3. 03

    Understand and ask

    Read, annotate, edit, and ask questions about a page or the whole lecture.

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

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.

Understand your lecture slides, in your language.

Upload a PDF or PPTX. See each original slide beside an editable explanation in the language you understand best.

Upload your slides