Credits and licenses

What this page lists

Tab Sketcher is built on work that other people published for free. This page names all of it: the libraries that draw and play the notation, the music font behind every note head, the SoundFont you hear on playback, and the pieces bundled as samples. Each entry carries the license it is used under.

This is not a legal notice. It is a plain list kept in step with what the site actually ships, so when an asset is swapped out or dropped, its line disappears from this page too.

Libraries

Notation is drawn and played by AlphaTab, released under the Mozilla Public License 2.0 and maintained by Daniel Kuschny and contributors. It handles staff and tab layout, Guitar Pro file import, and the built-in synthesizer.

AlphaTab in turn carries several smaller libraries, named in the license header it distributes: TinySoundFont (MIT), SFZero (MIT), parts of the Haxe standard library (MIT), SharpZipLib (MIT), NVorbis (MIT), and code adopted from libvorbis (BSD-3-Clause).

The interface itself runs on React and React DOM (MIT). PDF export uses jsPDF (MIT), and multi-page PNG export bundles its files with JSZip, which is dual-licensed and used here under the MIT terms.

The music font: Bravura

Every note head, clef, and rest on the staff is a glyph from Bravura, the reference font for the SMuFL music notation standard. It is copyright 2015 Steinberg Media Technologies GmbH, carries the reserved font name "Bravura", and is licensed under the SIL Open Font License 1.1.

The copy served from this site is the unmodified one distributed with AlphaTab. Bravura is also embedded directly in SVG exports, so a file you download still shows its symbols on a machine that has never installed the font.

Playback sound

Playback uses the SONiVOX SoundFont, copyright 2004-2006 Sonic Network Inc. and licensed under the Apache License 2.0. It descends from the Sonivox EAS synthesizer in the Android Open Source Project and reaches this site through the AlphaTab distribution.

It is the default, not a fixed choice. You can load your own .sf2 or .sf3 file from the player whenever you want a different instrument set.

Sample songs

The five pieces bundled with the tool (Romance, Greensleeves, Lágrima, Gymnopédie No.1, and Canon in D) are all in the public domain. Composer dates, publication years, and reference links live on the guitar pieces page instead of being repeated here.

Nothing still under copyright is bundled as a sample. Tabs you write, lyrics you type, and Guitar Pro files you import remain yours: they are saved in your own browser, and the tool makes no claim over them.

Interface fonts and icons

Text in the interface uses fonts already installed on your device, following the standard system stack on macOS, Windows, Android, and iOS. Bravura is the only font this site downloads, and it exists purely for the notation.

No icon set or stock image is bundled either. The small symbols around the editor are text glyphs, taken either from Bravura or from your system emoji font.

If a line on this page turns out to be wrong, or something is missing from it, contact details are on the about page.