# TTSFox

> Text to Speech on Firefox. It use OS build-in TTS engines, you can use it even when offline.

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

## Overview

- **ID:** `ttsfox`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Ett Chung
- **Category:** language-support
- **Daily users:** 1,317
- **Weekly downloads:** 15
- **Rating:** 3.67 / 5 (48 ratings)
- **Version:** 0.0.28
- **Last updated:** 2019-08-05
- **First published:** 2016-04-30
- **Size:** 33 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/ttsfox/)
- **Website:** [https://github.com/ettoolong/TTSFox](https://github.com/ettoolong/TTSFox)

## Description

TTSFox is a powerful Firefox extension that enables text-to-speech functionality using your operating system's built-in TTS engines. This means you can convert text into spoken words without an internet connection, offering offline accessibility and convenience.

Using TTSFox is straightforward: simply click the toolbar icon to enter your text and hit the "Speech" button, or highlight any text on a web page, right-click to open the context menu, select the "Speech" item, and then press "Speech" to start listening. You can also cancel speech playback at any time by clicking the Cancel button. This extension enhances Firefox browsing by making text content accessible audibly, perfect for multitasking or accessibility needs.

## Rankings

- #2,844 — Overall
- #114 — Language Support
- #37 — build
- #41 — foe
- #61 — speech
- #62 — offline

## Permissions and access

### Permissions

- `activeTab`
- `storage`
- `tabs`
- `contextMenus`

## Safety

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

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions 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).

## Review summary

TTSFox is praised for being simple, reliable, and able to leverage OS voices without extra software, with a useful feature to read selected text at adjustable speeds. However, users repeatedly request finer speed controls, note reliability issues in some cases, and point to English-dominant language support with inconsistent non-English options. There is also confusion about reading full pages versus selected text. Overall, strong ease-of-use and usefulness contrast with speed, language, and reliability concerns.

### Pros

- Simple, easy to use and reliable for everyday use.
- Helpful for long online sessions and reduces eye strain.
- Uses OS built-in offline voices with customizable settings and requires no extra software.
- Ability to vocalize a selected text with adjustable speed and voice tone, useful for sites not optimized for Firefox reading mode.
- Good cross-language/OS support, with Korean working well and solid Windows 10 compatibility.

### Cons

- Speed options are too coarse; users want more granular increments (e.g., 1.1x, 1.2x, 1.3x, 1.4x) and even faster like 3x.
- Occasional reliability problems; some reviews report not working or being broken.
- Language support appears English-dominant and inconsistent across languages (e.g., Korean works in some cases, but overall English focus).
- Reading mode scope is unclear or limited; users report having to select text to hear speech instead of auto-reading entire pages, leading to confusion.

## Similar extensions and apps

- [Text to Speech](https://chrome-stats.com/d/text-to-speech-add-on) — 23 users
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- [Simple TTS Text to Speech Reader](https://chrome-stats.com/d/simple-tts-texttospeech-reader) — 50 users, 5.00 / 5
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- [TTS Reader](https://chrome-stats.com/d/tts-reader) — 59 users, 3.33 / 5
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- [VoiceSissy Select-Text-to-Speech TTS Editor](https://chrome-stats.com/d/voicesissy) — 100 users, 2.00 / 5
- [Native text to speech ( tts )](https://chrome-stats.com/d/native-text-to-speech-tts) — 330 users, 2.88 / 5
- [Text 2 Speech (TTS)](https://chrome-stats.com/d/text-2-speech-t2s) — 50 users, 3.27 / 5
- [Text to Speech](https://chrome-stats.com/d/tts-extension) — 152 users, 1.94 / 5
- [Text to Speech Voice Reader](https://chrome-stats.com/d/text-to-speech-voice-reader) — 1 users
- [ReadSpeaker® TextAid for Firefox](https://chrome-stats.com/d/readspeaker-textaid-add-on) — 325 users, 1.94 / 5

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