Skip to content

AOL personal file cabinet (.org)

.org 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

.org

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .org files in Python

Python 
def is_org(file_path: str) -> bool:
    """Check if file is a valid ORG 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 .org files in Node.js

Node.js 
function isORG(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 .org files in Go

Go 
func IsORG(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/org
curl https://filesignature.org/api/v1/org

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .org file?

A .org 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 .org 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 .org file?

To validate a .org 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 .org files?

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

Is it safe to open .org files?

AOL personal file cabinet (.org) 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.