how to batch rename all pdf files in a folder to the pdf metadata title?

[drramimagdi]

i tried a code that i found elsewhere but it's not working
exiftool.exe -d %Y '-fileName${Title} - $Author [$CreateDate]'.pdf  -ext pdf

[StarGeek]

You didn't include the tag copy operation. Try
exiftool.exe -d %Y '-fileName<${Title} - $Author [$CreateDate]'.pdf  -ext pdf

Though this will fail if any one of Title, Author, or CreateDate doesn't exist.  If this command fails, it helps if you copy/paste the output and use the Code Button on the output.