lookup> application/octet-stream

application/octet-stream

application/octet-stream is a application media type commonly associated with .bin, .dms, .lrf, .mar, .so, .dist, .distz, .pkg, .bpk, .dump, .elc, .deploy, .exe, .dll, .deb, .dmg, .iso, .img, .msi, .msp, .msm, .buffer extensions.

applicationCompressibleContent-Type

Quick facts

MIME typeapplication/octet-stream

Extensions.bin .dms .lrf .mar .so .dist

Charset—

CompressibleYes

Sourceiana

What is application/octet-stream

application/octet-stream

application/octet-stream is one of the application media types used on the internet, and it is safe to compress for transport. When serving this content over HTTP, set the Content-Type header in the response, for example:

Content-Type: application/octet-stream

Related entities: associated extensions include .bin、.dms、.lrf、.mar, and is delivered over HTTP via the Content-Type header, commonly with GET, POST, PUT and PATCH requests.

Related formats:

BIN Data & TextDMS Data & TextLRF Data & Text

Relation chain

.bin .dms .lrfserved as

mime type

application/octet-streamsent via header

http header

Related MIME types

application/1d-interleaved-parityfec application/3gpdash-qoe-report+xml application/3gpp-ims+xml application/3gpp-mbs-object-manifest+json

Used with

application/octet-stream is identified in HTTP by the Content-Type header and is commonly used with these methods:

GET POST PUT PATCH

Related headers

Related methods

Frequently asked questions

What is application/octet-stream?

application/octet-stream is a application media type used to identify a content format; servers announce it to clients with the Content-Type header.

Which file extensions use application/octet-stream?

Extensions such as .bin, .dms, .lrf, .mar are associated with this MIME type.

How do I set the Content-Type for application/octet-stream?

Send Content-Type: application/octet-stream in the HTTP response.

Sources & standards

Updated 2026-08-18