Supported sites

The extension works on the song pages of the following sites:

jemaf.fr: the song pages (/chant/…) and the /listes/part… pages, with or without “www”;
shir.fr: the wiki pages (/wiki/…), except category pages;
db.ltc-asaph.com (LTC Asaph): the song pages (/songs/…);
musique.topchretien.com (TopChrétien): the song pages (/chant/…);
accords.app: the extension only acts when a song is displayed.

On other sites, the extension stays inactive: no other page is read or modified.

On all five sites: the floating button, chord colour, chord diagrams, downloading the song as A4, the “Learning” entry and the “Configuration”.

A few settings depend on how each site displays its songs:

Structure items colour: jemaf.fr, musique.topchretien.com and accords.app;
Hide secondary chords and Simplify chords: jemaf.fr, shir.fr, db.ltc-asaph.com and musique.topchretien.com. Not on accords.app, which already offers its own chord-format selector, and which changing the chord text would disrupt;
Optimize space: hide duplicated parts: jemaf.fr only;
Duplicate verse numbers, removed automatically when the site already shows them through a structure title: jemaf.fr and accords.app.