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.
Quick facts
What is 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:
Relation chain
Related extensions
Related MIME types
Used with
Related headers
Related methods
Frequently asked questions
application/octet-stream is a application media type used to identify a content format; servers announce it to clients with the Content-Type header.
Extensions such as .bin, .dms, .lrf, .mar are associated with this MIME type.
Send Content-Type: application/octet-stream in the HTTP response.
Sources & standards
Updated 2026-09-13
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This page provides original, human-reviewed information about MIME types such as application/octet-stream, the MIME Type Reference and related concepts. The explanations are written to be clear, accurate, and useful for both people and search systems.
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