# VoiceBrief
> VoiceBrief turns PDFs, textbooks, research papers, and long documents into natural audio for studying, commuting, accessibility, and offline listening.

## Primary Tools
- [PDF to MP3 converter](https://voicebrief.io/pdf-to-mp3): Upload a PDF, preview estimated audio length, and create downloadable MP3 audio for offline listening.
- [PDF to audio converter](https://voicebrief.io/pdf-to-audio): Convert PDFs into natural-sounding audio, preview read/listen time, and handle scanned PDFs with OCR after upload.
- [PDF to audiobook converter](https://voicebrief.io/pdf-to-audiobook): Turn long PDFs, textbook chapters, public-domain books, and study packets into audiobook-style audio.
- [Reading time calculator](https://voicebrief.io/tools/reading-time-calculator): Estimate reading time, listening time, word count, page count, and study planning time.

## Helpful Guides
- [How to convert a PDF to audiobook](https://voicebrief.io/blog/how-to-convert-pdf-to-audiobook): Free, MP3, scanned PDF, and offline listening methods.
- [Listen to PDF offline](https://voicebrief.io/blog/listen-to-pdf-offline): How to download and organize PDF audio for offline listening.
- [Best text-to-speech software for students](https://voicebrief.io/blog/best-text-to-speech-for-students): Comparison for students with long assignments, textbook PDFs, and study workflows.
- [Best free text-to-speech apps 2026](https://voicebrief.io/blog/best-free-text-to-speech-apps-2026): Compare free TTS apps for PDFs, students, MP3 downloads, browser reading, and natural AI voices.
- [AI voice vs human narration](https://voicebrief.io/blog/ai-voice-vs-human-tts): When AI voices work well for audiobooks, textbooks, and PDF audio.

## Pricing
- Free plan: 1 PDF conversion, premium AI voice, MP3 download. No credit card required.
- Pro: $9.99 per month. Unlimited PDFs, voice chat with documents, AI summaries, spaced-repetition quizzes, teach mode, podcast generation.
- Lifetime: $149 one-time payment. All Pro features forever, no recurring charge.
- Student pricing: same as Pro by default. Bulk educational pricing available on request.

## Comparisons
- [VoiceBrief vs Speechify](https://voicebrief.io/vs-speechify): How VoiceBrief compares to Speechify on pricing, voice quality, PDF support, and study tools.
- [VoiceBrief vs NotebookLM](https://voicebrief.io/vs-notebooklm): Differences from Google NotebookLM for document-based study workflows.
- [VoiceBrief vs Speechify, NaturalReader and NotebookLM](https://voicebrief.io/blog/voicebrief-vs-competitors): Side-by-side comparison across the three most-searched alternatives.
- [Free vs Premium TTS](https://voicebrief.io/blog/free-vs-premium-tts): Where free text-to-speech tools quit on you and when paid tiers earn the upgrade.
- [AI voice vs human narration](https://voicebrief.io/blog/ai-voice-vs-human-tts): Where AI voices already match human narrators and where humans still win.

## Key Facts
- VoiceBrief is a web app for PDF to audio, PDF to MP3, PDF to audiobook, AI summaries, voice chat, quizzes, and study workflows.
- The free plan lets users start with one PDF conversion without a credit card.
- MP3 downloads are designed for offline listening on phones, tablets, desktops, car audio, and podcast-style workflows.
- Scanned or image-heavy PDFs may need OCR before clean audio can be generated.
- The premium AI voices are powered by leading text-to-speech engines including OpenAI's neural voices.
- Private user documents, dashboards, API routes, and account pages are not public reference content.

## Brand
- Name: VoiceBrief
- Website: https://voicebrief.io
- Category: PDF to audio converter, text-to-speech study tool, AI audio learning app
- Founder: Deep Mehta
- Location: United States