The F major pentatonic scale has 5 notes: F – G – A – C – D. The major pentatonic is the major scale without its two most tense notes (the 4th and 7th), so every note sounds good over the key’s chords. It is sweet, open and singable: the sound of country licks, B.B. King and countless folk tunes, and the raga Bhupali in Indian music.
It is the yardstick the other scales are measured against. It has exactly the same notes as D minor pentatonic, started from a different root.
The explorer above is set to F major pentatonic: the whole neck is mapped, and you can zoom into any of its 5 positions, change the labels to degrees or fingers, and hear it up, down and in patterns.