Open a PDF and Vocalize reads it aloud — research papers, textbooks, reports — with live sentence highlighting so your eyes never lose the line.
Free · No account needed · Installs in seconds
Sentence highlighting follows along the whole way.
Open any PDF — local file or on the web.
Vocalize narrates the document in a natural neural voice.
Every sentence highlights in sync, and your place is saved.
Get through journal articles and preprints by ear — and follow the highlight to stay with the argument.
Listen to chapters while you commute or review, and resume exactly where you stopped.
Turn long PDFs and whitepapers into audio you can absorb hands-free.
Hear natural pronunciation in 70+ languages while reading the page along.
Your browser can show a PDF, but it can't read it to you the way Vocalize does.
Vocalize reads PDFs that contain real, selectable text. Image-only scanned PDFs without an underlying text layer can't be read aloud until they've been run through OCR.
Yes. Vocalize handles long documents like research papers, textbooks, and reports, and remembers where you stopped so you can pick up where you left off.
Hundreds of natural neural voices across 70+ languages, with adjustable speed from 0.5× to 2×.
Vocalize also reads web pages aloud and EPUB e-books aloud.
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