The most widely supported attachment types are jpeg, png, and gif images. Bandwidth will accept all file types on the list below but deliverability isn't guaranteed since downstream carriers and handsets may have limitations on what types of files they accept.
Note: For the list of file types supported on toll-free MMS, check out this support article.
Supported MMS file types
Note: .pdf files sent from iPhones to non-iMessage destinations, or from/to older Samsung devices (Android 9 and earlier), are not supported.
Extension | File Type |
.json | application/json |
.ogv | application/ogg |
.oga | application/ogg |
.ogx | application/ogg |
.ogg | application/ogg |
application/pdf (see note above) | |
.rtf | application/rtf |
.zip | application/zip |
.tar | application/x-tar |
.xml | application/xml |
.gz | application/gzip |
.bz2 | application/x-bzip2 |
.smil | application/smil |
.js | application/javascript |
.m4a | audio/mp4 |
.m4p | audio/mp4 |
.m4b | audio/mp4 |
.m4r | audio/mp4 |
.mp1 | audio/mpeg |
.mp2 | audio/mpeg |
.mp3 | audio/mpeg |
.m1a | audio/mpeg |
.m2a | audio/mpeg |
.mpa | audio/mpeg |
.oga | audio/ogg |
.ogg | audio/ogg |
.flac | audio/flac |
.webm | audio/webm |
.wav | audio/wav |
.amr | audio/amr |
.3ga | audio/amr |
.3gp | audio/3gpp |
.bmp | image/bmp |
.dib | image/bmp |
.gif | image/gif |
.heic | image/heic |
.heif | image/heif |
.jfif | image/jpeg |
.jpg | image/jpeg |
.jpeg | image/jpeg |
.pjpeg | image/pjpeg |
.png | image/png |
.svg | image/svg+xml |
.tiff | image/tiff |
.tif | image/tiff |
.webp | image/webp |
.ico | image/x-icon |
.css | text/css |
.csv | text/csv |
.cal | text/calendar |
.ics | text/calendar |
.html | text/html |
.txt | text/plain |
.js | text/javascript |
.vcf | text/vcard |
.vcard | text/vcard |
.wap | text/vnd.wap.wml |
.xml | text/xml |
.avi | video/avi |
.mp4 | video/mp4 |
.m4v | video/mp4 |
.mpg | video/mpeg |
.mpeg | video/mpeg |
.m1v | video/mpeg |
.mpv | video/mpeg |
.ogv | video/ogg |
.ogx | video/ogg |
.ogg | video/ogg |
.spx | video/ogg |
.ogm | video/ogg |
.mov | video/quicktime |
.qt | video/quicktime |
.webm | video/webm |
.wmv | video/x-ms-wmv |
.flv | video/x-flv |