To ensure the best experience with Dropbox across all platforms and operating systems, we recommend following these guidelines when naming files and folders in your Dropbox account. This includes Windows, Mac, Android, iPhone, iPad, and Linux. Each operating system has its own file and folder name limitations, but the recommendations below cover all of them.
Even if you don’t get an error message when you name a file on your operating system, if you don’t follow the guidelines below, it could cause a problem when you try to open or sync the file on another operating system.
File and folder name recommendations
Don’t use more than 260 characters in a file or folder path.
File and folder paths must be less than 260 characters long. For example, the file path “C:\Users\Panda\My Documents\Dropbox\Creative Nonfiction\My Autobiography\Favorite Things\Favorite Foods\Bamboo\Family Recipes\Fresh Leaves.doc” has 142 characters.
Don’t use special characters in file names.
Don’t use the following characters in file or folder names:
/ (forward slash)
< (less than)
> (greater than)
" (double quote)
| (vertical bar or pipe)
? (question mark)
emojis or emoticons
Don’t add a space at the end of a file or folder name.
For example, don’t name a file or folder “Panda .png”.