The practice of colposcopy has evolved significantly over the last few years with the introduction of new screening technologies and management algorithms. The Atlas of Colposcopy: Principles and Practice has been developed keeping in mind the evolving concepts and the changing scenarios. The atlas deals with the basics and then guides the learner through the intricacies of detecting the changes, differentiating neoplastic from the non-neoplastic conditions and documenting the findings. We have demonstrated the use of the colposcopy terminology recently adopted by the International Federation of Cervical Pathology & Colposcopy (IFCPC) and also the Swede system of scoring. We hope that the freely accessible resource will prove to be a very valuable learning tool for the students as well as the practitioners of colposcopy and management of cervical neoplasias.