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Read aloud
Listen to any PDF, free. Free, no sign-up.
How to have a PDF read aloud
Read aloud speaks the document’s text, so you can listen instead of reading.
- Open your PDF. Any text-based document.
- Press play. Reading follows the page, highlighting as it goes.
- Listen. Pause, skip and change speed as you go.
What the voice is actually reading
Read aloud never looks at the picture of the page. It takes the text layer the PDF already carries, one page at a time, joins that page’s text items with single spaces, collapses the whitespace, and splits the result into sentences at full stops, question and exclamation marks, ellipses and their CJK equivalents. All of it is on screen before you press play: the sentence list under the controls is exactly what will be spoken, in that order.
The voice is one your operating system already ships, driven through the browser’s speech API, so nothing is downloaded and nothing is uploaded — and there is no file at the end, because the audio is produced live as it plays. The page is handed over as one long utterance rather than one utterance per sentence, which is what removes the gap Chromium otherwise leaves between queued chunks. The highlight follows the position the engine reports as it speaks rather than a timer, so it holds at 0.75× and at 2×.
Changing voice or speed applies the next time you press play, not to the sentence in flight. Turning the page stops the voice and loads that page’s text: this reads a page, not a document.
When the reading order comes out wrong
The order is the order the PDF stores its text in, which is not always the order a person reads. A two-column paper often stores both columns in one run, so a sentence from the left column can be finished by one from the right. Running heads, page numbers and footnote markers sit in that stream too and get read out mid-paragraph. Abbreviations end sentences early: Fig. 3 and Dr. Chen each contain a full stop, so the highlight moves on sooner than you expect.
When a page comes out as nonsense, read the sentence list rather than trying another voice — it tells you in a second whether the fault is the extraction or the reading. A page with no text layer is called out as a probable scan, and OCR PDF is the fix; a password-protected file has to go through Unlock PDF before it will open at all. To inspect a whole document’s extraction in one go, PDF to Markdown writes it out as a file you can scroll.
Questions
Why does it sound different on my phone?
The free voice is the one built into your browser, and browsers ship different voices — so quality varies by device, not by anything we control. The Folia AI voice sounds natural and consistent everywhere; it runs on Folia Cloud because the speech model is far too large to send to every visitor.
Does it work on scanned PDFs?
Run OCR PDF first so there is text to read.
Can I download the audio as an MP3?
No. The speech is synthesised by your device as it plays, so there is no audio file at any point to save — and nothing is sent anywhere to produce it.
Can it read the whole PDF without me clicking through?
Not yet. Read this page speaks the page you are on, from the top; Next loads the following page’s text and stops the voice, so you press play again. Reading page by page is also what keeps the highlight tied to the page in front of you.
Why did the voice stop after about fifteen seconds in Chrome?
Chrome quietly auto-pauses long stretches of speech. Folia nudges playback every ten seconds to defeat that, so it should not happen — if it does, press play again and the page starts from the top.
Are my files uploaded to a server?
No. Every tool on this site runs inside your browser, using the same engine as the Folia desktop app. Your file is read from your disk into your browser’s memory, processed there, and handed back as a download. It never crosses the internet, so there is nothing for us to store, leak or hand over.
Is there a file size limit?
We impose none. The only ceiling is your own device’s memory, which differs from one computer to another — so we read what your browser reports about this machine and show the resulting limit on the page. Light tools like merge and rotate handle far more than heavy ones like OCR, which must render every page. For anything larger, Folia for Desktop has no limit at all.
Is it really free? Do I need an account?
Yes, and no. Every tool is free and unlimited, with no watermark and no sign-up. Ads pay for the site, and your own computer does the work, which costs us nothing. Signing in with a paid Folia plan simply removes the ads.