GNU Image Manipulation Program (.xcf)
.xcf file signature | image/x-xcf
GNU Image Manipulation Program (GIMP) eXperimental Computing Facility (XCF)image file
Magic Bytes
Offset 0
67 69 6D 70 20 78 63 66 20
Sources: Apache Tika, Gary Kessler
All Known Signatures
2 signature variants are documented for .xcf files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| 67 69 6D 70 20 78 63 66 20 | 0 | Apache Tika, Gary Kessler |
| 67 69 6D 70 20 78 63 66 | 0 | Wikipedia |
Extension
.xcf
MIME Type
image/x-xcf
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .xcf files in Python
def is_xcf(file_path: str) -> bool:
"""Check if file is a valid XCF by magic bytes."""
signature = bytes([0x67, 0x69, 0x6D, 0x70, 0x20, 0x78, 0x63, 0x66, 0x20])
with open(file_path, "rb") as f:
return f.read(9) == signatureHow to validate .xcf files in Node.js
function isXCF(buffer: Buffer): boolean {
const signature = Buffer.from([0x67, 0x69, 0x6D, 0x70, 0x20, 0x78, 0x63, 0x66, 0x20]);
return buffer.subarray(0, 9).equals(signature);
}How to validate .xcf files in Go
func IsXCF(data []byte) bool {
signature := []byte{0x67, 0x69, 0x6D, 0x70, 0x20, 0x78, 0x63, 0x66, 0x20}
if len(data) < 9 {
return false
}
return bytes.Equal(data[:9], signature)
}API Endpoint
/api/v1/xcf
curl https://filesignature.org/api/v1/xcf
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .xcf file?
A .xcf file is a GNU Image Manipulation Program file. GNU Image Manipulation Program (GIMP) eXperimental Computing Facility (XCF)image file
What are the magic bytes for .xcf files?
The magic bytes for GNU Image Manipulation Program files are 67 69 6D 70 20 78 63 66 20 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .xcf file?
To validate a .xcf file, read the first bytes of the file and compare them against the known magic bytes (67 69 6D 70 20 78 63 66 20) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .xcf files?
The primary MIME type for .xcf files is image/x-xcf.
Is it safe to open .xcf files?
GNU Image Manipulation Program (.xcf) 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.