You can rename PDF files or folders name anytime as you wish, you can use words, space, and part of special symbols.
Here’s the steps of how to rename PDF files or folders
- Select(long press/select icon) the target PDF or folder to get into the selected mode
- Tap the ‘Rename’ icon at the top-right of PDFs window
- You can also tap the PDF or folder’s name after selected
- Enter the new name and tap the ‘Change’ button to finish