NotebookLM Alternative: Best Free Tool to Convert Slides to Notes (2026)
Google's NotebookLM made waves as an AI-powered research notebook. Upload documents, ask questions, get summaries. It's impressive for general research — but for the specific task of converting lecture slides to study notes, there are better-suited tools.
Here's why students are looking for NotebookLM alternatives, and which tools actually deliver.
Why Students Want a NotebookLM Alternative
NotebookLM is great for general document analysis, but for slide-to-notes conversion it has friction:
- Requires a Google account — not everyone wants to sign in
- No direct PPT upload — you need to convert slides to PDF or Google Slides first
- No structured note output — you get AI chat responses, not formatted study notes
- No download — can't export notes as Word or PDF directly
- Limited Arabic support — struggles with RTL lecture content
- General-purpose — not optimized for the slide → notes workflow
Comparison Table
| Feature | Sharayeh | NotebookLM | Quizlet | SlideLizard |
|---|---|---|---|---|
| Purpose | Slides → Notes (built for this) | General AI notebook | Flashcards/study | Live polling + slides |
| PPT upload | Direct PPTX/PPT | PDF/Docs only | No slides | PPTX (for presenting) |
| Output | Structured notes (4 formats) | Chat-style answers | Flashcards | Audience notes |
| Download | Word or PDF | Copy text only | Export cards | |
| Signup | None | Google account | Account required | Account required |
| Arabic/RTL | Full support | Limited | No | No |
| Free limit | Unlimited | 100 sources | 8 sets/month | Free tier limited |
| Cost | Free | Free (with caps) | $3/mo student | $8/mo |
Detailed Comparison
Sharayeh — Purpose-Built for Slides → Notes
Sharayeh's Turn Slides into Notes is specifically designed for one workflow: upload a PowerPoint file, get organized study notes.
Why it wins for slide conversion:
- Upload PPTX/PPT directly — no conversion needed
- AI produces structured notes, not chat responses
- 4 note formats: bullet points, paragraphs, Cornell, outline
- Download as Word or PDF
- Free account in seconds, no watermarks, unlimited
- Full Arabic/RTL support
Limitations:
- No follow-up questions (it's a one-shot converter, not a chatbot)
- No flashcard generation
- No in-app editing
Best for: Students who want to convert lecture slides to downloadable study notes quickly.
NotebookLM — Best for Research & Follow-up Questions
Google NotebookLM shines when you want to upload multiple documents and have a conversation with your materials. It's a research assistant, not a note generator.
Strengths:
- Conversational AI — ask follow-up questions about your content
- Multi-source — upload PDFs, Docs, websites, and YouTube
- Audio summarization — converts notes to podcast-style audio
- Source citations — shows which document each answer comes from
Limitations for slide conversion:
- No PPTX support — must convert to PDF first
- Output is chat messages, not structured notes
- Can't download as formatted Word/PDF
- Requires Google account
- Limited Arabic processing
Best for: Research projects where you need to synthesize information from multiple sources.
Quizlet — Best for Flashcard-Based Study
Quizlet doesn't convert slides to notes — it creates flashcards and study sets. It's a different workflow entirely.
Strengths:
- AI-powered flashcard generation
- Spaced repetition for memorization
- Practice tests and games
- Collaborative study sets
Limitations:
- Can't upload PowerPoint files
- Not designed for note generation
- 8 free study sets per month, then $3/month
- No Arabic support
Best for: Memorization-heavy subjects where flashcards are the primary study method.
SlideLizard — Best for Live Presentation Interaction
SlideLizard is a presentation tool that adds interactivity (polls, Q&A) to live presentations. It's not a study tool.
Strengths:
- Live audience interaction
- PowerPoint integration
- Audience note-taking during presentations
Limitations:
- Designed for presenters, not students
- Notes are audience-generated, not AI-generated
- Requires account and paid plan for most features
Best for: Professors and trainers, not students studying after class.
The Right Tool for Each Workflow
| If you need to... | Use |
|---|---|
| Convert lecture slides → study notes | Sharayeh |
| Research & ask questions about docs | NotebookLM |
| Create flashcards for memorization | Quizlet |
| Add interactivity to live presentations | SlideLizard |
| Summarize a PowerPoint quickly | Sharayeh (Summarize PPT tool) |
Combined Workflow: Sharayeh + NotebookLM
For maximum study efficiency, use both:
- Sharayeh first: Upload your lecture PPTX → download structured study notes
- NotebookLM second: Upload those notes + textbook PDFs → ask AI questions to test understanding
This gives you the best of both worlds: structured notes for review, and conversational AI for deeper understanding.
Try It Now
- Turn Slides into Notes — Free, free account in seconds
- How to convert lecture slides to study notes — Step-by-step student guide
- Summarize PowerPoint — Quick presentation summaries