We report on the performance of jet reconstruction in CMS during the LHC Run 2. The jet energy scale and resolution measurements are performed on a data sample collected from proton-proton collisions at a center-of-mass energy of 13 TeV. The calibration is extracted from data and simulated events and employs combination of several channels and methods. We also report on boosted object tagging, which is particularly relevant for searches for new physics. Finally we discuss techniques to identify and reject jets originating from pileup and to discriminate between jets originating from quarks or gluons.