DRX (.drx)
.drx file signature | application/octet-stream
DRX is a file format associated with Macromedia Director, originally created by Macromedia and later maintained under Adobe after its acquisition of Macromedia. It is used to store Director project resources and related data for interactive multimedia presentations, including animations, educational content, and other rich media applications. The format is legacy and largely obsolete, but it is generally considered safe; as with any older media file, untrusted files should still be opened with current software.
Magic Bytes
Offset 0
52 49 46 58
Sources: Wikipedia
All Known Signatures
2 signature variants are documented for .drx files across multiple sources.
Extension
.drx
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .drx files in Python
def is_drx(file_path: str) -> bool:
"""Check if file is a valid DRX by magic bytes."""
signature = bytes([0x52, 0x49, 0x46, 0x58])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .drx files in Node.js
function isDRX(buffer: Buffer): boolean {
const signature = Buffer.from([0x52, 0x49, 0x46, 0x58]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .drx files in Go
func IsDRX(data []byte) bool {
signature := []byte{0x52, 0x49, 0x46, 0x58}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/drx
curl https://filesignature.org/api/v1/drx
See the full API documentation for all endpoints and parameters.
Related Formats
Frequently Asked Questions
What is a .drx file?
A .drx file is identified by the magic bytes 52 49 46 58 at byte offset 0. DRX is a file format associated with Macromedia Director, originally created by Macromedia and later maintained under Adobe after its acquisition of Macromedia. It is used to store Director project resources and related data for interactive multimedia presentations, including animations, educational content, and other rich media applications. The format is legacy and largely obsolete, but it is generally considered safe; as with any older media file, untrusted files should still be opened with current software.
What are the magic bytes for .drx files?
The magic bytes for DRX files are 52 49 46 58 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .drx file?
To validate a .drx file, read the first bytes of the file and compare them against the known magic bytes (52 49 46 58) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .drx files?
There is no officially registered MIME type for .drx files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .drx files?
DRX (.drx) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.