Mobile app2026
Folio
Turn any PDF into an immersive reading and listening experience.
View sourceWeb app
Cover image coming soon
Why I built it
Turn any PDF into an immersive reading and listening experience.
I don't enjoy sitting down and reading books for long periods of time, but I still want to spend my time learning instead of endlessly scrolling through short-form content.
I also travel frequently and almost always have headphones with me. That made me think about turning the time I spend commuting and travelling into time I can use to read and learn.
Folio was built around that idea: take something I would normally have to sit down and read, and make it possible to experience it through audio without losing the ability to read the original document.
What it does
- 01Upload any PDF and have it automatically processed into a structured, listenable document.
- 02PDF files are securely stored in S3 before entering the document processing pipeline.
- 03Mistral extracts the meaningful text and content from uploaded PDFs, including documents that require more than simple text extraction.
- 04Intelligent chunking breaks long documents into logical sections so they can be processed and consumed progressively rather than as one large block.
- 05Text-to-speech generation converts each section into audio that can be played directly from the app.
- 06The original PDF remains available for reading alongside the generated audio, letting users switch between reading and listening.
- 07Processed document data, chunks, and audio metadata are persisted in the database so users can return to their documents without processing them again.
Screenshot coming soon
Screenshot coming soon