LanguageUNDO
Backup data
File type: Backup file
Files with undo file extension are usually used by many applications for their backup files.
What is undo file?
File type category:
Backup file
Date updated: June 6, 2017
The .undo file extension is probably used by some applications for their backup files (documents, spreadsheets, projects, designs, images, etc.) during some process, so its possible to roll-back the changes.
How to open undo file?
Use compatible tools to work with *.undo files.