eXtensible ARchivefile (.xar)
.xar file signature | application/vnd.xara
eXtensible ARchiveformat[52]
Magic Bytes
Offset 0
78 61 72 21
Sources: Apache Tika, Wikipedia, Gary Kessler
Extension
.xar
MIME Type
application/vnd.xara
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .xar files in Python
def is_xar(file_path: str) -> bool:
"""Check if file is a valid XAR by magic bytes."""
signature = bytes([0x78, 0x61, 0x72, 0x21])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .xar files in Node.js
function isXAR(buffer: Buffer): boolean {
const signature = Buffer.from([0x78, 0x61, 0x72, 0x21]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .xar files in Go
func IsXAR(data []byte) bool {
signature := []byte{0x78, 0x61, 0x72, 0x21}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/xar
curl https://filesignature.org/api/v1/xar
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .xar file?
A .xar file is a eXtensible ARchivefile file. eXtensible ARchiveformat[52]
What are the magic bytes for .xar files?
The magic bytes for eXtensible ARchivefile files are 78 61 72 21 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .xar file?
To validate a .xar file, read the first bytes of the file and compare them against the known magic bytes (78 61 72 21) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .xar files?
The primary MIME type for .xar files is application/vnd.xara.
Is it safe to open .xar files?
eXtensible ARchivefile (.xar) 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.