.OLD File Extension
File TypeBackup File
File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.
What is an OLD file?
An OLD file is a backup copy of a file, such as a .JPG or .DOC file. It may be created automatically by a software program or created manually by a user to indicate that the file is a backup copy of a file.
The ".old" extension is often placed after the original file suffix of a file when a newer version of the file has been created or saved by a certain program. For example, document.doc.old would be a backup copy of the document.doc file. The ".old" extension may have to be deleted in order for the file to be opened correctly.