Original post: https://stackoverflow.com/a/10501888
- Open your file in Notepad++
- Ensure that you select UTF-8 from the Encoding menu
- Open the Find dialog (use CTRL-F or go to the Search menu and select "Find...")
- Under "Search Mode", select the radio button for "Regular expression"
- Enter
[^\x00-\x7F]
in the "Find what" box and hit the "Find Next" button to see what you get