PSL score
A forum rating scale, not a measurement.
PSL is a rating scale used in looksmaxxing communities, named after the three forums it emerged from. Faces are rated on a numeric scale by other members, with the labels attached to each band varying between communities and over time. The thing worth understanding is that PSL is a poll, not a measurement: it records how a particular group of people rated a particular photograph, and it has no defined inputs, no procedure and no reference population. No tool can compute a PSL score, and any that claims to is either producing its own composite and calling it PSL, or asking a model to imitate the ratings it saw during training. That is a different thing from measuring a face, and the distinction matters because the two get quoted interchangeably in the same sentence.
Measure this on your own face
Free looksmax testA weighted composite of eight facial measurements, scored 0 to 100.