StudyInk - my lecture slides, rewritten as a study book by Gemma on my laptop

Description and use

StudyInk turns lecture decks into structured, scan‑ready study notes using Gemma 4 locally, eliminating cloud costs.

Problem

Students need concise, scan‑ready study notes from large lecture slide decks, but slides are designed for presentation, not revision.

Outcome

StudyInk transforms lecture decks into a structured, scan‑ready study book on the student’s laptop, eliminating cloud costs and providing instant slide references.

Workflow

• Drop a .pptx or .pdf deck into StudyInk
• LibreOffice headless converts .pptx to PDF
• PyMuPDF extracts slide text, speaker notes, and a small picture of each slide
• StudyInk identifies figures by detecting images and vector shape clusters
• Gemma 4 (E4B) classifies each figure crop (diagram, flowchart, table, chart, screenshot, or decorative) and extracts text if needed
• Gemma 4 writes concise notes: gist, short points, step flows, comparison tables, captions, index cards, sticky notes, and self‑check questions
• Each point is footnoted with the source slide number; clicking opens the original slide
• The notebook is stored in IndexedDB; the uploaded deck is deleted from temp storage
• StudyInk runs as a native Mac app with a bundled Node runtime; it starts Ollama if needed and unloads the model on exit

Evidence

Drop in a lecture deck (.pptx or .pdf) and it becomes a chapter of a study book

Source

Gemma looks at every figure. This is the vision half of Gemma 4. For each crop it decides: diagram, flowchart, table, chart or screenshot (keep it, and caption it)

Source

Every point has a footnote. Gemma tags each point with the slide it came from ([s12]), and the book turns that into a numbered footnote. Click one and the actual slide opens

Source