An accept string can be a combination of the following values, separated by comma.
| Value | Description |
|---|---|
| file_extension | Specify the file extension(s) (e.g: .gif, .jpg, .png, .doc) |
| audio/* | All sound files |
| video/* | All video files |
| image/* | All image files |
For example:
.pdf,.xls
image/*,.pdf,.xls
audio/*
audio/*,video/*