How to write the regex to pull out the file name after the last / at the end of a log?

[akelly4]

I have the following line in a log and i'm trying to pull out the file name at the end. How do I use regex to pull everything after the last /?

URL: http://testing.tester.com/pub/info/test/archive/fp_13.0.0.2fsf_test.zip

I was trying rex "URL: ^\/" but it doesn't seem to be working.

[richgalloway]

This worked for me in RegExr:

"URL: .*[/](?<filename>.*)"