I recently needed to test which Content Types a web application was able to accept in a few different forms. This isn’t a particularly difficult task but I realised that there is no single list of content types in a nice easy-to-use fashion. So I made it…

You can download that list here.

This is a sample of what it looks like:

application/1d-interleaved-parityfec
application/3gpdash-qoe-report+xml
application/3gppHal+json
application/3gppHalForms+json
application/3gpp-ims+xml
application/A2L
application/ace+cbor
application/ace+json
application/activemessage
application/activity+json

As you can see, it is just a line delimited list of mime types.

I discovered that essentially it is possible to make up a mime type if you are a developer. This means that my list is guaranteed to be incomplete. At the time of writing, this list had a little over 2000 Content Types / Mime Types in it. If you notice any missing, please get in touch!