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

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