Check the preview column. All selected files gain .txt . Uncheck any you don't want to change. Click Apply .
Comments Section. shanereichart. • 3y ago. You can accomplish this by checking the "Use regular expressions" option. Search for "^ Reddit·r/PowerToys powerrename add extension to files without extension
: Ensure the "Apply to" dropdown is set to "Filename only" or "Filename + Extension" . If it is set to "Extension only," PowerRename may ignore files that don't already have one. Check the preview column
: Users who aren't familiar with regular expressions might find it intimidating. It isn't a "one-click" fix for missing extensions and requires manually entering a specific pattern. Reddit +7 Quick Setup Guide To add an extension to files that have none: Select your files in File Explorer, right-click, and choose Click Apply
: Right-click and select PowerRename from the context menu. Enable RegEx : Check the box for "Use Regular Expressions" .