A file block is an attachment of any kind. link is required and is an ipfs://<cid> file. Attributes: name (the file name shown to readers), size (bytes; older documents stored it as a string, and readers coerce it), and the parent-layout pair childrenType and columnCount. The block does not store the file's type. The daemon serves the bytes as application/octet-stream, and the reader detects the type from the bytes.

See also

Files: how files are stored and served.

block/image and block/video: media blocks.

ipfs-url: the ipfs:// reference type.

Blocks: the block model.