iReadAlliReadAll

PDF Voice Reader

Read your PDF aloud online for free.

Open your PDF, choose a voice, and listen with synchronized highlighting. No installation needed.

Open your PDF and listen

Choose a file to start your free read-aloud trial.

or drag and drop PDF up to 100 MB

Try a sample

Try reading aloud without an account.

One-time guest preview: 20,000 characters shared across readers. Free account: 200K Reader characters/month, with saved sources and reading progress. No credit card.

Original pages, search, and bookmarks

Listen and follow each sentence

Recover text from scanned pages

Free online PDF text-to-speech

How to read a PDF aloud online

Read your own PDF aloud online with AI voices and synchronized highlighting. You can try it without an account or credit card, directly in your browser.

  1. Open your PDF. Choose PDF file or drag in a PDF up to 100 MB. You can also try the sample.
  2. Choose a voice. Confirm the suggested narrator or select another voice. If your PDF is scanned, recognize the text first.
  3. Listen and follow along. Press Listen, follow the highlighted sentences, and adjust the speed to suit you.

Free PDF read-aloud limits

Try reading your own PDF aloud with a one-time 20,000-character guest trial, shared across readers. No account or credit card is needed to try it. A signed-in Free account includes 200,000 Reader characters per month.

The guest trial does not reset. Create a free account to continue when it is used up. If you reach your Free account's monthly limit, wait for the next allowance period or upgrade your plan. The reader shows your remaining allowance. New narration and audio exports use that allowance; you can keep reading the original PDF when listening is paused.

Read, listen, and keep your place

Listen with synchronized highlighting

Hear your PDF with natural AI voices and follow each sentence on the page. Click readable text to start listening from that point.

A voice and pace that suit you

Confirm the suggested narrator or choose another voice. Adjust playback from 0.5–2× speed while keeping the original pages available.

Text PDFs and scanned pages

Open your own PDFs up to 100 MB. Use text view and highlighting, or recover scanned text with OCR before generating narration.

Long-document controls

Use page navigation, search, bookmarks, annotations, pronunciation rules, and saved reading progress.

MP3 and WAV export

Generate audio using your listening allowance, then export the current page, a range, or readable document as resumable MP3 or WAV parts.

Your files, your choices

Imported PDFs open in your browser. Online recognition asks for a page scope; cloud file saving is a separate choice. Opening a library PDF does not generate audio.

Check OCR and reading order on difficult PDFs

Scans, multiple columns, footnotes, tables, equations, and incomplete accessibility tags can still produce imperfect text or reading order. Test one difficult page in Text view, compare important names and numbers with the original, and use the detailed PDF OCR and reading-order guide before starting a long technical document.

What stays local and what is sent for processing

A PDF you choose from your device opens locally in this browser. When online narration is enabled, up to 2,000 characters of available body text can prepare a voice in the background; playback starts when you choose Listen. Online recognition uploads only pages within your confirmed scope. On-device recognition keeps the extracted text local until you enable online narration. Cloud file and audio saving are separate choices. Read the Privacy Policy before opening confidential material.

Find PDFs and listen to published library audio

Original library PDFs are free to read. Editions marked Free audio include published AI narration that does not use your listening allowance. Some recordings cover the article text; references and publication details remain in the original PDF. The player and edition page identify that scope. Need a document? Find PDFs by topic, title, author, or DOI.

Opening a library PDF fetches its published file without starting voice design or audio generation. Published narration loads when you press play. If published free audio is unavailable, you can retry or keep reading; the reader does not automatically generate replacement audio using your allowance.

Need device-specific instructions or built-in alternatives? Follow the guide to reading a PDF aloud on any device. For a whole DRM-free ebook with publisher chapters, use the EPUB Voice Reader instead.

Discover more readingBooks, stories, and published audioEPUB Voice ReaderFor whole DRM-free ebooksVoice ReaderFor links and pasted textPDF text-to-speech guideFormats, OCR and reading orderHow to read a PDF aloudInstructions for every deviceBest PDF text-to-speech readers2026 comparisonRead research papers aloudA workflow for researchers

Frequently asked

Common questions, answered.

Can I read a PDF aloud online for free?

Yes. Read your own PDF aloud with a one-time 20,000-character guest trial, shared across readers, without an account or credit card. A signed-in Free account includes 200,000 Reader characters per month. The guest trial does not reset; create a free account to continue when it is used up. If you reach your Free account's monthly limit, wait for the next allowance period or upgrade. The reader shows your remaining allowance, and you can keep reading the PDF when listening is paused.

How do I read a PDF aloud online?

Choose PDF file or drag your own PDF into the reader. Confirm the suggested voice or choose another, then press Listen to hear the text with synchronized highlighting. You can also click a readable sentence to start there. Scanned pages need text recognition before narration. Choose Try a sample if you want to explore the reader before opening your own file.

Does the PDF Voice Reader work with scanned PDFs?

Yes. Choose Text view, Search, or Listen. If a page needs text, the reader explains how to extract it. Online recognition can process the current page or pages needing text in this PDF, with your confirmation. On-device recognition handles the current page without uploading it. Extracted text becomes available for reading and search; check uncertain passages with View original.

What's the maximum PDF size I can upload?

The current interface accepts PDF files up to 100 MB. Browser memory and document complexity still affect performance, so very long or image-heavy books may be easier to navigate when split into chapters or sections.

Can I download the audio from a PDF?

The reader can generate MP3 or lossless WAV audio for the current page, a page range, or the readable document through Settings → Offline audio. Generating this audio uses your existing narration allowance. Long exports are split into resumable parts, and signed-in users can save generated MP3 parts to the Audio Library. A library's free published audio is a separate listening option.

Is my PDF private?

A PDF you choose from your device opens locally in your browser. When online narration is enabled, up to 2,000 characters of available body text can prepare a voice in the background; playback starts when you choose Listen. Online recognition sends only pages in the scope you confirm. On-device recognition keeps extracted text local until you enable online narration. Cloud file and audio saving are separate choices. Library PDFs are fetched from the public collection; opening one does not start voice design or audio generation.

Can it read password-protected, multi-column, or technical PDFs?

You can enter the password for a PDF you are authorized to open. Multi-column pages, footnotes, tables, equations, and unusual tagging can still produce an imperfect reading order. Check a difficult page in Text view and compare important numbers or formulas with the original before relying on the audio.

Can I read a PDF without uploading a file?

Yes. Choose Try a sample to open an original iReadAll PDF. You can also use Find PDFs to search books, papers, and reports. Results marked Read PDF open in this reader; View source takes you to the publisher or repository. The resource library also offers curated editions with source, credits, and license information. Editions marked Free audio have published narration that plays without using your narration allowance; generating new narration or another voice uses your allowance.

Can I download the original PDF for free?

Library PDFs are free to read. Where Download PDF is available, you can also save the original file for free. We retain the original PDF and its attribution pages. Check the edition's linked license and credits for the terms that apply when sharing or adapting that work.

What languages and playback speeds are supported?

Reader AI narration supports 10 languages: English, Chinese, German, Spanish, French, Japanese, Portuguese, Korean, Hindi, Arabic. Adjust PDF playback from 0.5–2× speed. Voice availability for device narration depends on your browser and operating system.

Does iReadAll skip headers, footers, page numbers, and citations?

The reader skips detected headers, footers, and page numbers during narration. Detection can be imperfect on scans and complex layouts, and inline citations are not guaranteed to be removed. Check Text view and compare important passages with the original.