What are LUFS and why does -14 matter?
LUFS (Loudness Units relative to Full Scale) is the standard measurement for perceived audio loudness. Spotify, Apple Music, and YouTube automatically adjust every song to around -14 LUFS. If your track is louder, they turn it down. If it's quieter, they leave it as is—making it sound weak. Matching this target gives you consistent playback and maximum competitive loudness.