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 a PDF and VoiceBrief extracts its text, can attempt OCR for scanned pages when that service is available, and generates audio with natural AI voices. Processing time depends on page count, OCR, audio length, and service load. Beyond basic PDF-to-audio conversion, VoiceBrief adds AI summaries, document chat, quizzes, and MP3 download on Pro. The limited free plan is a lightweight preview tier that lets users test the workflow without a credit card; check the pricing page for current limits.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 need OCR; VoiceBrief can attempt it when the OCR service is available.

VoiceBrief generates audio with a natural AI voice. Longer and scanned documents take more time.

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.