Custom TTS Reader Firefox

Custom TTS Reader

TTS implementation for the OpenAI api format. It can probably be used for any OpenAI api compliant service but its made for remsky/Kokoro-FastAPI. Click 'Read Selected Text' in the context menu after highlighting text.
Custom TTS ReaderCustom TTS Reader
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Features & Capabilities

Custom TTS Reader is a Chrome extension that implements text-to-speech using the OpenAI API format. It can work with any OpenAI-compatible service, including Kokoro FastAPI, and reads highlighted text via the 'Read Selected Text' context menu.

From the extension toolbar you can configure the API URL, API key, speed, and voice. If you leave options unchecked, it reads sentence by sentence; streaming mode is the recommended approach, while download mode saves an MP3. Hosting your own speech endpoint improves privacy and control; GitHub links for the extension and Kokoro FastAPI are provided for quick setup.

User Growth & Download Statistics

Manifest V2 Add-on Developer Tools API AI Accessibility Privacy & Security
By:
BassGaming
Daily users:
326 12
Rating:
4.18
(11)
Version:
1.5.2 Last updated: 2026-01-02
Version code:
6111587
Creation date:
2025-01-29
Risk:
High risk impact Moderate risk likelihood
Permissions:
Size:
39.43KB
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-14
Compare stats and ranking:

Ranking

# 6,331 ▲ 82
Other rankings
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For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
BassGaming
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/custom-tts-reader/
Website:
https://github.com/BassGaming/customtts

Permission Change History

2026-01-02: Version 1.4.1 → 1.5
Remove Permissions: webRequest webRequestBlocking
2025-07-17: Version 1.3.5 → 1.4
Add Permissions: downloads
2025-03-29: Version 1.1 → 1.2.5
Add Permissions: tabs webRequest webRequestBlocking

User Reviews

It works with a local OpenAI API endpoint, topp!! Just, wish we could go back and forth.. but it will do it! ^^ Also, it's FOSS! Which is big thumbup from me! Little guide if you are using Lemonade for kokoro, the end point is your "<cannotwriteit>localhost:port/api/v1", API key must be "-", voice I like "af_heart", and model is "kokoro-v1". Thanks BassGaming for making this extension!! ^^
by Fr*****, 2026-06-05
Very nice - which kokoro alternative would you recommend for english and german language support? Preferably also runnable in docker EDIT: Is it possible to have the extension work for english and german with native language models simultaniously?
by Fi*****, 2026-02-06
by Cl*****, 2026-01-30
View all user reviews ›

Is Custom TTS Reader 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.

Custom TTS Reader requires some sensitive permissions that could impact your browser and data security. 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.
  • Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
  • Medium ****** ********** ** ******** ********** *** ********* ******* ******** ****** ******** ****** ********
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.

Custom TTS Reader is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

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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