Gongwharf — Terms of Use

Product: Gongwharf: Volume Booster & Equalizer, a browser extension for Firefox and Opera.
Publisher: Zydeno. Contact: [email protected]
Effective date: 19 October 2026.

What Gongwharf does

Gongwharf changes the volume of browser tabs from 0 % to 600 %, offers a five-band equalizer, balance, mono and a limiter, remembers levels per site and lists the tabs that are playing sound. It works with the audio and video players of web pages. Some players cannot be boosted (for example copy-protected media or media served from another site without permission); there Gongwharf can only make the sound quieter and says so.

Price

This version is free, with no advertising, purchases or paid features. These terms apply to this version and do not promise any future price or functionality.

Your hearing and your equipment

Very high levels can damage hearing and speakers. Levels above 300 % are marked as a red zone. Lower the volume before using headphones, keep the limiter on for loud material, and use boosting at your own judgement. Zydeno is not responsible for damage caused by listening at excessive volume.

Data

The extension stores data only in your browser (storage.local); nothing is sent to Zydeno or anyone else; no analytics. Details and every permission are explained in the Privacy Policy. Export your settings before removing the browser profile if you want to keep them.

Use

You may use Gongwharf for lawful personal and work purposes. Do not use it to break the terms of websites or services you use. Websites, their players and their content belong to their owners; Gongwharf does not change what a site sends and does not remove copy protection.

No warranty

Gongwharf is provided as is. We work to keep it reliable, but we do not guarantee that it works with every website, browser version or audio device, or that it will run without interruption. Nothing in these terms excludes rights that applicable law does not allow to be excluded.

Third-party materials

The fonts Jura and Yanone Kaffeesatz are used under the SIL Open Font License 1.1; the licences are included with the extension. The Gongwharf name, icon and materials belong to Zydeno.

Contact

Support and questions: [email protected].