VoiceBrief — Convert PDFs into Audio You Can Listen ToVoiceBrief 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

Upload your PDF on the home page. Scanned PDFs trigger OCR automatically.

VoiceBrief generates audio using a premium AI voice within roughly thirty seconds for clean text PDFs.

Stream the audio in the browser with read-along highlighting, or download as an MP3 for offline use.

Optionally generate an AI summary, start a voice chat about the document, or take an adaptive quiz on the material.