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AOL personal file cabinet (.pfc)

.pfc file signature | application/octet-stream

AOL personal file cabinet (PFC) fileNOTE:SeePFC-Details.zipfor PFC file format information.

Safe

Magic Bytes

Offset 0
41 4F 4C 56 4D 31 30 30

Sources: Gary Kessler

Extension

.pfc

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .pfc files in Python

Python
def is_pfc(file_path: str) -> bool:
    """Check if file is a valid PFC by magic bytes."""
    signature = bytes([0x41, 0x4F, 0x4C, 0x56, 0x4D, 0x31, 0x30, 0x30])
    with open(file_path, "rb") as f:
        return f.read(8) == signature

How to validate .pfc files in Node.js

Node.js
function isPFC(buffer: Buffer): boolean {
  const signature = Buffer.from([0x41, 0x4F, 0x4C, 0x56, 0x4D, 0x31, 0x30, 0x30]);
  return buffer.subarray(0, 8).equals(signature);
}

How to validate .pfc files in Go

Go
func IsPFC(data []byte) bool {
    signature := []byte{0x41, 0x4F, 0x4C, 0x56, 0x4D, 0x31, 0x30, 0x30}
    if len(data) < 8 {
        return false
    }
    return bytes.Equal(data[:8], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .pfc file?

A .pfc file is a AOL personal file cabinet file. AOL personal file cabinet (PFC) fileNOTE:SeePFC-Details.zipfor PFC file format information.

What are the magic bytes for .pfc files?

The magic bytes for AOL personal file cabinet files are 41 4F 4C 56 4D 31 30 30 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .pfc file?

To validate a .pfc file, read the first bytes of the file and compare them against the known magic bytes (41 4F 4C 56 4D 31 30 30) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .pfc files?

There is no officially registered MIME type for .pfc files. Systems typically use application/octet-stream as a generic fallback when handling this format.

Is it safe to open .pfc files?

AOL personal file cabinet (.pfc) 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.