.crw Canon CRW raw image
Images
| MIME type | image/x-canon-crw |
|---|---|
| Description | Canon CRW raw image |
| Acronym | CRW – Canon RaW |
| Category | Images |
| Signature (magic bytes) | 49 49 1A 00 00 00 48 45 41 50 43 43 44 52 (II....HEAPCCDR) |
| Based on | image/x-dcraw |
Frequently asked questions
What is a .crw file?
A .crw file is a “Canon CRW raw image” (MIME type image/x-canon-crw). CRW stands for Canon RaW.
How do I open a .crw file?
With any image viewer that supports the format – the Photos app on Windows, Preview on macOS, Eye of GNOME or GIMP on Linux. For unusual formats a converter such as ImageMagick helps.
How can you tell a genuine .crw file?
By the bytes at the start of the file, the signature (magic bytes): 49 49 1A 00 00 00 48 45 41 50 43 43 44 52 (II....HEAPCCDR). On Linux and macOS, file --mime-type example.crw checks the real type regardless of the extension.
Which format is .crw based on?
Technically a .crw file is a subtype of “Digital raw image” (image/x-dcraw), so programs for that base format can often read it too.
Which MIME type belongs to .crw?
The MIME type is image/x-canon-crw. In the Apache web server: AddType image/x-canon-crw .crw; in nginx: types { image/x-canon-crw crw; }.