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PSFLIB (.psflib)

.psflib file signature | audio/x-psf

Safe

Magic Bytes

Offset 0
50 53 46

Sources: Apache Tika

Extension

.psflib

MIME Type

audio/x-psf

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .psflib files in Python

Python 
def is_psflib(file_path: str) -> bool:
    """Check if file is a valid PSFLIB by magic bytes."""
    signature = bytes([0x50, 0x53, 0x46])
    with open(file_path, "rb") as f:
        return f.read(3) == signature

How to validate .psflib files in Node.js

Node.js 
function isPSFLIB(buffer: Buffer): boolean {
  const signature = Buffer.from([0x50, 0x53, 0x46]);
  return buffer.subarray(0, 3).equals(signature);
}

How to validate .psflib files in Go

Go 
func IsPSFLIB(data []byte) bool {
    signature := []byte{0x50, 0x53, 0x46}
    if len(data) < 3 {
        return false
    }
    return bytes.Equal(data[:3], signature)
}

API Endpoint

GET /api/v1/psflib
curl https://filesignature.org/api/v1/psflib

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .psflib file?

A .psflib file is a PSFLIB file.

What are the magic bytes for .psflib files?

The magic bytes for PSFLIB files are 50 53 46 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .psflib file?

To validate a .psflib file, read the first bytes of the file and compare them against the known magic bytes (50 53 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 .psflib files?

The primary MIME type for .psflib files is audio/x-psf.

Is it safe to open .psflib files?

PSFLIB (.psflib) 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.