> For the complete documentation index, see [llms.txt](https://docs.jabref.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.jabref.org/v4/setup/externalfiletypes.md).

# Manage external file types

This feature is available through **Options → Manage external file types**.