# Readalix: Read Aloud & Text to Speech

> Reads any web page, PDF, Google Doc or online Word document aloud in a natural voice and highlights every word as it is spoken. Free browser voices with no limit, plus 100+ voices that run offline on your device.

Canonical page: [https://chrome-stats.com/d/readalix](https://chrome-stats.com/d/readalix)

## Overview

- **ID:** `readalix`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Readalix
- **Category:** language-support
- **Daily users:** 18
- **Weekly downloads:** 20
- **Version:** 1.21.1
- **Last updated:** 2026-11-10
- **First published:** 2026-10-09
- **Size:** 49 MB
- **Data as of:** 2026-11-11
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/readalix/)
- **Website:** [https://readalix.com](https://readalix.com/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/readalix/privacy/](https://addons.mozilla.org/firefox/addon/readalix/privacy/)

## Description

Readalix is a read aloud text to speech (TTS) reader for Firefox. It reads a page out loud in a natural voice and highlights every word as it is spoken, so you can always see which line is being read.

Select any text and press play. The sentence gets a light tint, and each word is highlighted as it is read. Most of the voices run offline on your own device, so a read keeps going with no internet connection.

<strong>WHERE IT READS</strong>
<ul><li>Web pages. Select a paragraph and press play, or point at anything on the page and read from there to the end.</li><li>PDF files. Readalix opens a PDF in its own reader, reads it aloud and highlights each word on the page. Scanned PDFs are read too.</li><li>Google Docs. It reads a document aloud right in the editor and highlights each word in the document itself.</li><li>Online office documents. It reads a document opened in an online office editor and highlights it there.</li><li>Presentations. Slide text in online presentation editors is read aloud with the same highlighting.</li><li>Text boxes. It reads back what you typed into an input or a comment box, the quickest way to check a reply before you send it.</li></ul>
<strong>VOICES</strong>
<ul><li>Browser voices are free with no limit: the ones already installed on your computer, with nothing to set up.</li><li>More than 100 natural voices in over 30 languages run on your device. Each is a small one-time download, then it speaks offline.</li><li>28 premium English voices add exact per-word timing. One shared download covers all of them, and they run offline too.</li><li>One on-device model speaks 31 languages, so a single download covers every one of them.</li><li>Over 300 online neural voices cover more than 70 languages, with no API key and nothing to download.</li><li>Expressive cloud voices are available too when you paste your own API key from a supported AI provider.</li><li>Every voice has a play button, so you can hear it before you choose it.</li></ul>
<strong>WHAT YOU CAN DO</strong>
<ul><li>Pause on the exact word being read, then carry on from that same word instead of the start of the sentence.</li><li>Change the voice or the speed while it is still reading, anywhere from 0.25x to 4x.</li><li>Let the page scroll along with the voice, and jump back to the reading position with one click.</li><li>Start a read with a keyboard shortcut or from the right-click menu.</li><li>Pick your own highlight colours, or use one of 12 ready-made colour sets.</li><li>Save a read as an audio file, or as a video that shows one sentence at a time with the word being read highlighted.</li></ul>
<strong>WHO IT IS FOR</strong>
<ul><li>Dyslexia and focus. Seeing each word highlighted as it is read helps you keep your place on the page.</li><li>Language learners. Hear how words are really pronounced in more than 30 languages, and slow the voice down until it is clear.</li><li>Long articles and tired eyes. Listen to an article or a document the way you listen to a podcast, at up to 4x speed.</li><li>Writers and proofreaders. Your own text sounds different when you hear it read aloud, so clumsy sentences and repeated words are easy to notice.</li><li>Anyone who would rather listen than read.</li></ul>
<strong>PRIVACY</strong>

Offline voices create speech on your own machine, so the text never leaves your browser. If you pick a cloud voice, only the sentence being read is sent to that provider so it can be spoken. Your own API key stays on your device, is never synced and is never sent to us. Spoken audio is cached on your device so a re-read plays instantly, and you can clear it with one click.

<strong>PRICE</strong>

Browser voices are always free, with no limit. Every other voice comes with a free allowance of 20,000 characters a day, roughly 14 pages or about 22 minutes of speech. When it runs out, reading carries on with a browser voice. To remove the daily limit: $15 a year, or $40 once.

The interface is available in 52 languages.

Website: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/801a50f171cbb42ccbcec97beb830a8e30e7f33a88f7113340e4a8f165ab317b/https%3A//readalix.com/" rel="nofollow">https://readalix.com/</a>
Privacy: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/f277fd8ec9beb798edc9397a50af7c9c8d02550516a789907d0ac2099ca3aed1/https%3A//readalix.com/privacy" rel="nofollow">https://readalix.com/privacy</a>
Support: <a href="/" rel="nofollow">support@readalix.com</a>

## Rankings

- #27,367 — Overall
- #53 — speech
- #54 — text to speech
- #56 — speech to text

## Permissions and access

### Permissions

- `scripting`
- `storage`
- `unlimitedStorage`
- `contextMenus`
- `declarativeNetRequestWithHostAccess`

### Host permissions

- `<all_urls>`

### Content script matches

- `<all_urls>`
- `extensionpay.com`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/readalix)