Last updated: 17 October 2026
Music Waveform is built on work other people gave away. Every one of those licences asks for the same small thing in return — that the copyright notice travels with the code — and one of them asks for more than that. This page is where both are honoured.
The MPL is a copyleft licence: §3.2 permits distribution in executable form only where the source form is available and recipients are told how to get it. This section is that notice, and it is addressed to you — including if you bought the Pro add-on.
mediabunny
— MPL-2.0
Copyright (c) 2026-present, Vanilagy and contributors
Decodes your audio, and muxes and writes the MP4 this tool exports. A minified copy of it is part of the JavaScript this page serves you.
Its complete source code is published at github.com/Vanilagy/mediabunny, under the MPL-2.0, and may be obtained there by anyone who receives this page. The licence text is served at /licenses/MPL-2.0.txt.
Served from this domain as subsetted .woff2 files, which is
what makes this section necessary rather than a courtesy: those files are
copies of the Font Software, and the
SIL Open Font License 1.1 asks that
each copy carry its notice. None of the three reserves its name.
Under the MIT licence except where noted, and the Apache License 2.0 for Speed Insights.
The name, logo, interface, copy and source code belong to the publisher and are not released under an open-source licence — see the legal notice. Your exported video is yours: no watermark, no licence on the output, no attribution asked.