One Canon, Several Printings

No single printing of the Kangyur has ever held universal authority across all of Tibetan Buddhism. Major monastic centers produced their own xylograph editions over the centuries, most prominently at Derge, Narthang, Lhasa, Choné and the Qing imperial press at Beijing, and these editions differ from one another in the exact texts included, their ordering, and details of wording carried forward from the manuscript lineages each edition drew on.

Later Tibetan scholarship, and modern academic textual criticism following it, compares these editions against each other and against surviving Sanskrit fragments and Chinese parallel translations to reconstruct how individual texts changed as they moved through centuries of copying, sorting and reprinting. Modern digitization projects have made several of the major editions searchable and cross-referenced for the first time, a development that has itself become a live area of Tibetan Buddhist textual scholarship rather than a settled, finished cataloguing task. Comparing editions has also clarified the history of specific translations, since colophons preserved in different printings sometimes name different translators or record different revision dates for what is nominally the same text, evidence modern scholars use to reconstruct the layered history of Tibetan translation practice.