Files with the .r00 extension are created by the RAR archive application. The RAR file format is used to compress large files and volumes of multiple files into a compact file folder. The RAR format is very similar to the popular ZIP file format, although RAR files have increased compression ratios than what ZIP files can offer.
RAR archives can be split into multiple volumes in order to make storage and distribution of the files easier. When an archive is split into multiple volumes, the first volume of the archive will be given the .r00 extension. In order to open the split archive, all volumes of the file must be present.
Try a universal file viewer
File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.
If you have additional information about the R00 file format or software that uses files with the R00 suffix, please do get in touch - we would love hearing from you.