bzip2compressed archive (.bz2)
.bz2 file signature | application/octet-stream
Compressed file usingBzip2algorithm
Magic Bytes
Offset 0
42 5A 68
Sources: Wikipedia, Gary Kessler
Extension
.bz2
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .bz2 files in Python
def is_bz2(file_path: str) -> bool:
"""Check if file is a valid BZ2 by magic bytes."""
signature = bytes([0x42, 0x5A, 0x68])
with open(file_path, "rb") as f:
return f.read(3) == signatureHow to validate .bz2 files in Node.js
function isBZ2(buffer: Buffer): boolean {
const signature = Buffer.from([0x42, 0x5A, 0x68]);
return buffer.subarray(0, 3).equals(signature);
}How to validate .bz2 files in Go
func IsBZ2(data []byte) bool {
signature := []byte{0x42, 0x5A, 0x68}
if len(data) < 3 {
return false
}
return bytes.Equal(data[:3], signature)
}API Endpoint
/api/v1/bz2
curl https://filesignature.org/api/v1/bz2
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .bz2 file?
A .bz2 file is a bzip2compressed archive file. Compressed file usingBzip2algorithm
What are the magic bytes for .bz2 files?
The magic bytes for bzip2compressed archive files are 42 5A 68 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .bz2 file?
To validate a .bz2 file, read the first bytes of the file and compare them against the known magic bytes (42 5A 68) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .bz2 files?
There is no officially registered MIME type for .bz2 files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .bz2 files?
bzip2compressed archive (.bz2) 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.