Read Aloud PDF
Transform your PDF documents into immersive reading experiences. Whether you're studying research papers, reading reports, or reviewing manuscripts, Readio lets you listen to PDF files with natural AI voices while following along with synchronized highlighting and auto-scrolling.
Everything You Need to Read PDF Aloud
Get started with our powerful free tools designed to make PDF read aloud easier and more accessible. Upload your document and experience hands-free read aloud with intelligent features.
- Table of Contents Navigation
Navigate through your PDF with an interactive table of contents. Jump to any chapter or section instantly, making it simple to read aloud specific parts of lengthy documents.
- Auto-Scroll Technology
The page automatically scrolls to the sentence being read, keeping you focused on the current text, perfect for reading academic papers or long reports aloud.
- Sentence Highlighting
Each sentence is highlighted as it's read aloud, helping you maintain concentration while you read.
- Click to Read
Click any sentence to jump directly to that point in the audio. Perfect for re-reading passages or skipping ahead.
- Zoom Controls
Adjust text size with zoom controls for comfortable viewing on any screen size while reading aloud.
- Mobile Responsive Reader
Access PDF and read anywhere, on any device with seamless mobile-responsive design.
Premium Features
Upgrade to access professional-grade features that transform how you work with PDF documents. From scanned files to audio exports, take your PDF read aloud experience to the next level.
- OCR Technology
- Extract and read text from scanned PDF and handwritten manuscripts with advanced optical character recognition.
- Smart Text Filter
- Automatically skip footnotes, citations, headers, and reference numbers in academic papers to focus on main content when read aloud.
- Highlight & Annotate
- Mark important passages and add personal notes while read aloud. Perfect for students and researchers.
- Audio Export & Download
- Convert your PDF to MP3 files for offline read aloud. Export entire PDF or selected sections.
- Paragraph-Based Reading
- Experience more natural narration with paragraph-level audio generation that reduces awkward pauses when read aloud.
- Premium Voice Library
- Access high-quality AI voices with natural intonation. Choose from multiple languages and accents.
How to Read Your PDF Aloud
Getting started is simple. Upload your document and let AI voices bring your content to life.
- Drag and drop any PDF file into Readio. Supports all document types from textbooks to business reports.
- Choose from natural-sounding AI voices and customize read aloud speed, language, and preferences.
- Start reading aloud with synchronized highlighting. Navigate chapters, adjust zoom, and control playback easily.
Frequently asked questions
Have a different question and can’t find the answer you’re looking for? Reach out to our support team by sending us an email and we'll get back to you as soon as we can.
- How do I read a PDF aloud?
- Sign in to Readio, upload your PDF file to the dashboard, and select it to open in our reader. Choose your AI voice and click play. The PDF will be read aloud with synchronized highlighting and auto-scrolling.
- Can I read scanned PDF aloud?
- Yes, with a premium subscription. Our OCR technology extracts text from scanned PDF and handwritten documents, allowing you to listen to image-based files.
- Is the PDF reader mobile-friendly?
- Absolutely. Our PDF reader is fully mobile-responsive, so you can upload, read, and listen to PDF on your smartphone or tablet. All features work seamlessly on mobile devices.
- Can I download PDF audio files?
- Yes, premium users can export and download their PDFs as audio files. This lets you listen to your documents offline.
- What free features are available?
- Free users get access to table of contents navigation, auto-scroll, sentence highlighting, click-to-read, zoom controls, mobile access, playback controls, and progress tracking. These features provide a complete PDF read aloud experience.
- What do I get with premium?
- Premium unlocks OCR for scanned PDFs, smart filters to skip footnotes and citations, highlighting and annotation tools, audio export, paragraph-based read aloud for smoother narration, and access to our premium voice library.
- How does the smart filter work?
- Our smart filter uses AI to identify and skip content that interrupts the read flow in academic papers, such as footnotes, citations, and headers. This is useful when you read research papers or technical documents aloud.
- Can I control the read speed?
- Yes, you can adjust the read aloud speed to match your preference. Whether you want to read through documents quickly or listen at a slower pace, our speed controls give you full flexibility.
- What languages are supported?
- Our PDF reader supports over 140 languages with natural-sounding AI voices. You can read PDFs aloud in multiple languages, perfect for international documents and language learning.
- Do I need to install software?
- No installation required. Read Aloud PDF is a web-based tool that works directly in your browser. Simply sign in, upload your PDF, and start read aloud immediately.
- How does auto-scroll work?
- As your PDF is read aloud, the page automatically scrolls to keep the current sentence in view. This synchronized scrolling ensures you're always looking at the text being spoken.