G Ionian

The G Ionian mode — G A B C D E F# — shown across the guitar neck.

Swipe the neck sideways to see the higher frets.

G Ionian is the major scale — same seven notes, same order. The mode name describes which chord you treat as home, not a different set of notes.

The tool shows this from its parent key, G major, with G marked as where Ionian begins, the same seven notes centered on G.