1271 7Zip format Aggregate An archive format associated with the 7-Zip application. Its default compression method is LZMA, but it supports other compression methods as well. 1 Digital Preservation Department / The National Archives 18 Dec 2012 04/2024 (v.118): Description and links added as part of PRONOM Research Week 2023. The Church of Jesus Christ of Latter-day Saints. 17 Apr 2024 fmt/484 PUID 7z File extension 756 7Zip BOF: 7z¼¯'. 1 Absolute from BOF 0 377ABCAF271C