application/pdf
: .pdf
audio/mpeg
: .mp3
audio/ogg
: .ogg
audio/wav
: .wav
image/jpeg
: .jpg
, .jpeg
, .JPG
, .JPEG
image/png
: .png
, .PNG
application/vnd.openxmlformats-officedocument.wordprocessingml.document
: .docx
, .DOCX
application/vnd.openxmlformats-officedocument.presentationml.presentation
: .pptx
, .PPTX
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
: .xlsx
, .XLSX
application/msword
: .doc
, .DOC
application/vnd.ms-excel
: .xls
, .XLS
application/vnd.ms-powerpoint
: .ppt
, .PPT
text/csv
: .csv
, .CSV
video/mp4
: .mp4
, .MP4
text/plain
: .txt
, .TXT