What are Z39 files and how to open them
Are you having problems opening a Z39 file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.
What is a Z39 file?
A .Z39 file is a Split ZIP Archive (part 39) file.
Files with the .Z39 file extension are split ZIP archive files, created by WinZIP or compatible tools.
WinZIP and other compression tools take collections of files and compress them into a single archive file, normally to save hard drive space and to make distributing the file collection easier.
Archive files can get very big, and sometimes it is necessary to split them into smaller parts to fit on CDs or USB drives. When an archive file is split, each part of the archive is assigned a numbered file suffix. Files with the Z39 extension are part 39 of the split ZIP archive. The last part gets the file extension ZIP.
To access the content of the .Z39 file, you will need to have all the archive part files in the same folder and open the last file (with file extension ZIP) with your compression tool. Some tools can also extract the archive if you select the Z01 file, but others will fail, so make it a habit to always open the .ZIP file.
How to open Z39 files
We have identified four Z39 openers that are compatible with this specific type of Z39 file.
Programs that open Split ZIP Archive (part 39) files
Last updated: February 24, 2023
Various apps that use files with this extension
These apps are known to open certain types of Z39 files. Remember, different programs may use Z39 files for different purposes, so you may need to try out a few of them to be able to open your specific file.
Help us help others
File.org helps thousands of users every day, and we would love to hear from you if you have additional information about Z39 file formats, example files, or compatible programs. Please use the links below or email us at email@example.com to discuss further.
Not sure exactly what type of file you are trying to open? Try our new File Analyzer. It is a free tool that can identify more than 11,000 different kinds of files - most likely yours too! It will help you find software that can handle your specific type of file. Download File Analyzer here.