SZ (.sz)
.sz file signature | application/x-snappy-framed
SZ is a file format associated with the Snappy framing format, developed and maintained by Google as part of the Snappy compression ecosystem. It is used to store compressed data for fast transmission and retrieval in software systems, archives, and networked applications that rely on Snappy-compatible tools. The format is generally considered safe, with security concerns depending mainly on the trustworthiness of the source and the handling of decompressed content.
Magic Bytes
Offset 0
73 4E 61 50 70 59
Sources: Apache Tika
Extension
.sz
MIME Type
application/x-snappy-framed
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .sz files in Python
def is_sz(file_path: str) -> bool:
"""Check if file is a valid SZ by magic bytes."""
signature = bytes([0x73, 0x4E, 0x61, 0x50, 0x70, 0x59])
with open(file_path, "rb") as f:
return f.read(6) == signatureHow to validate .sz files in Node.js
function isSZ(buffer: Buffer): boolean {
const signature = Buffer.from([0x73, 0x4E, 0x61, 0x50, 0x70, 0x59]);
return buffer.subarray(0, 6).equals(signature);
}How to validate .sz files in Go
func IsSZ(data []byte) bool {
signature := []byte{0x73, 0x4E, 0x61, 0x50, 0x70, 0x59}
if len(data) < 6 {
return false
}
return bytes.Equal(data[:6], signature)
}API Endpoint
/api/v1/sz
curl https://filesignature.org/api/v1/sz
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .sz file?
A .sz file is identified by the magic bytes 73 4E 61 50 70 59 at byte offset 0. SZ is a file format associated with the Snappy framing format, developed and maintained by Google as part of the Snappy compression ecosystem. It is used to store compressed data for fast transmission and retrieval in software systems, archives, and networked applications that rely on Snappy-compatible tools. The format is generally considered safe, with security concerns depending mainly on the trustworthiness of the source and the handling of decompressed content.
What are the magic bytes for .sz files?
The magic bytes for SZ files are 73 4E 61 50 70 59 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .sz file?
To validate a .sz file, read the first bytes of the file and compare them against the known magic bytes (73 4E 61 50 70 59) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .sz files?
The primary MIME type for .sz files is application/x-snappy-framed.
Is it safe to open .sz files?
SZ (.sz) 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.