TTSFox
By: Ett Chung
Text to Speech on Firefox. It use OS build-in TTS engines, you can use it even when offline.
English
Español
Français
Português
日本語
简体中文
한국인
Features & Capabilities
User Growth & Download Statistics
- By:
- Ett Chung
- Daily users:
- 1,413 -20
- Rating:
- 3.72 (47)
- Version:
- 0.0.28 Last updated: 2019-08-05
- Version code:
- 4828024
- Creation date:
- 2016-04-30
- Risk:
- Moderate risk impact Low risk likelihood
- Permissions:
- Size:
- 33.48KB
- Email:
- et*****@hotmail.com
- URLs:
- Website
- Full description:
- See detailed description
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2026-06-17
- Compare stats and ranking:
-
Contact the developer
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User Reviews
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.
Recent reviews
норм, удобно в общем
by ar*****, 2026-03-10
you may get AI TTS from GitHub installed to local OS client, then leverage this to get instant TTS voice perfectly per my validation, awesome
by Li*****, 2025-11-23
by Ke*****, 2025-05-30
Is TTSFox Safe?
Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.
TTSFox requires a few sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.
TTSFox has earned a fairly good reputation and likely can be trusted.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
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