VoiceBrief — Convert PDFs into Audio You Can Listen To

VoiceBrief is a web app that converts PDFs into natural-sounding audio so you can listen to textbooks, research papers, course notes, and long documents while commuting, exercising, or doing low-attention work. Upload any PDF and VoiceBrief extracts the text, runs OCR on scanned pages if needed, and generates audio using premium AI voices in under a minute for typical study materials. Beyond the basic PDF-to-audio conversion, VoiceBrief layers study features: AI-generated summaries, voice chat with your documents (ask questions and get spoken answers), and spaced-repetition quizzes built from the material. The free plan handles one PDF without a credit card; Pro at $9.99 per month unlocks unlimited conversions and the full study toolkit. Audio downloads as MP3 for offline listening on phones, tablets, podcast apps, and car audio systems.

What VoiceBrief does

• PDF to audio — natural AI voices read your PDF aloud, streamable in the browser or downloadable as MP3.
• AI summaries — get the gist of a long document in 2–3 minutes of audio instead of an hour of reading.
• Voice chat — ask questions about your PDF out loud, hear answers grounded in the document content.
• Spaced-repetition quizzes — VoiceBrief generates quiz questions from your document and schedules reviews using the SM-2 algorithm.
• Read along — sentence-level highlighting synchronized with the audio so you keep your place while listening.

Who VoiceBrief is for

• Students working through textbook chapters, research papers, and lecture notes.
• Commuters and gym-goers turning passive time into active learning.
• Auditory learners and people with ADHD or dyslexia who absorb material better through listening.
• Researchers and professionals reading dense reports who want to listen during low-attention work.

How VoiceBrief works

1. Upload your PDF on the home page. Scanned PDFs trigger OCR automatically.
2. VoiceBrief generates audio using a premium AI voice within roughly thirty seconds for clean text PDFs.
3. Stream the audio in the browser with read-along highlighting, or download as an MP3 for offline use.
4. Optionally generate an AI summary, start a voice chat about the document, or take an adaptive quiz on the material.