Is Supertonic Text-to-Speech Voices safe?

Clean risk

Adds in-browser AI text-to-speech voices to the browser’s available voice list.

This extension adds Supertonic text-to-speech voices to the browser so websites, apps, and other extensions can synthesize text into audio. The voices run in the browser and are included with the extension package, with English listed in the manifest permissions.

LSD SoftwareChrome Web Store
0Risk
Who publishes it

Business - 2 other listings from the same operator, none carrying a finding

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
LSD Software
Declared legal entity
Business
Registered address
158 Magellan Ave, San Jose, CA 95116, US
Registered contact
LSD Software

Same store account

2 other listings published from this account, 6.0M+ users between them, none of them carrying a finding.

Shared hosts - 1 hostname

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

supertonic.ttstool.com
Also called by 2 other listings, including Read Aloud: A Text to Speech Voice Reader

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Updated 15 October 2026mdoplmghlkjcnegkdhocjbjcncocbdhk