Elite Plus Commander saved game file (.cdr)
.cdr file signature | application/coreldraw
The CDR file format is a saved game file used by Elite Plus Commander, a game developed by MicroProse and maintained through legacy software support. It stores player progress, mission state, and related gameplay data for loading and resuming campaigns in the original game. As a legacy format, it is generally safe to open, though files from untrusted sources should still be handled with normal caution.
Magic Bytes
Offset 0
52 49 46 46
Sources: Apache Tika, Gary Kessler
All Known Signatures
3 signature variants are documented for .cdr files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| 52 49 46 46 | 0 | Apache Tika, Gary Kessler |
| 45 4C 49 54 45 20 43 6F 6D 6D 61 6E 64 65 72 20 | 0 | Gary Kessler |
| 4D 53 5F 56 4F 49 43 45 | 0 | Gary Kessler |
Extension
.cdr
MIME Type
application/coreldraw
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .cdr files in Python
def is_cdr(file_path: str) -> bool:
"""Check if file is a valid CDR by magic bytes."""
signature = bytes([0x52, 0x49, 0x46, 0x46])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .cdr files in Node.js
function isCDR(buffer: Buffer): boolean {
const signature = Buffer.from([0x52, 0x49, 0x46, 0x46]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .cdr files in Go
func IsCDR(data []byte) bool {
signature := []byte{0x52, 0x49, 0x46, 0x46}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/cdr
curl https://filesignature.org/api/v1/cdr
See the full API documentation for all endpoints and parameters.
Related Formats
Frequently Asked Questions
What is a .cdr file?
A .cdr file is a Elite Plus Commander saved game file file. The CDR file format is a saved game file used by Elite Plus Commander, a game developed by MicroProse and maintained through legacy software support. It stores player progress, mission state, and related gameplay data for loading and resuming campaigns in the original game. As a legacy format, it is generally safe to open, though files from untrusted sources should still be handled with normal caution.
What are the magic bytes for .cdr files?
The magic bytes for Elite Plus Commander saved game file files are 52 49 46 46 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .cdr file?
To validate a .cdr file, read the first bytes of the file and compare them against the known magic bytes (52 49 46 46) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .cdr files?
The primary MIME type for .cdr files is application/coreldraw.
Is it safe to open .cdr files?
Elite Plus Commander saved game file (.cdr) 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.