The NetSuite API supports the following file types ( see here for NetSuite documentation)
If the type you need is not here please contact NetSuite to file an enhancement request.
File Types supported by the NetSuite API
_APPCACHE |
_AUTOCAD |
_BMPIMAGE |
_CERTIFICATE |
_CFF |
_CONFIG |
_CSV |
_EOT |
_EXCEL |
_FLASH |
_FREEMARKER |
_GIFIMAGE |
_GZIP |
_HTMLDOC |
_ICON |
_IMAGE |
_JAVASCRIPT |
_JPGIMAGE |
_JSON |
_LZH |
_MESSAGERFC |
_MISCBINARY |
_MISCTEXT |
_MP3 |
_MPEGMOVIE |
_MSPROJECT |
_OTF |
_PDF |
_PJPGIMAGE |
_PLAINTEXT |
_PNGIMAGE |
_POSTSCRIPT |
_POWERPOINT |
_QUICKTIME |
_RTF |
_SCSS |
_SMS |
_STYLESHEET |
_SVG |
_TAR |
_TARCOMP |
_TIFFIMAGE |
_TTF |
_VISIO |
_WEBAPPPAGE |
_WEBAPPSCRIPT |
_WOFF |
_WOFF2 |
_WORD |
_XMLDOC |
_XSD |
_ZIP |