To log rename actions:

Choose Renamer > Preferences.

Click Advanced.

Select “Write Log File”.
With Renamer you log your rename operations. You can use the log for your records, or as the basis for a script to automate future renaming.
Choose Renamer > Preferences.
Click Advanced.
Select “Write Log File”.
Renamer provides a default location for the log file. You can change the location by clicking “Select”, choosing the file and clicking Save.