Leipziger Buchmesse is one of Germany's major literary events, bringing publishers, authors, readers, and a large public programme to Leipzig each spring. It fits the city well: Leipzig has deep publishing and printing traditions, and the fair keeps that identity visible rather than purely historical.
For most travellers it is a timing note, not a year-round sight. If your visit overlaps, book accommodation early and look beyond the trade halls, because readings and related events spill into venues around the city.