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Quicken data file (.abd)

.abd file signature | application/octet-stream

Quicken data file

Safe

Magic Bytes

Offset 0
51 57 20 56 65 72 2E 20

Sources: Gary Kessler

Extension

.abd

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .abd files in Python

Python 
def is_abd(file_path: str) -> bool:
    """Check if file is a valid ABD by magic bytes."""
    signature = bytes([0x51, 0x57, 0x20, 0x56, 0x65, 0x72, 0x2E, 0x20])
    with open(file_path, "rb") as f:
        return f.read(8) == signature

How to validate .abd files in Node.js

Node.js 
function isABD(buffer: Buffer): boolean {
  const signature = Buffer.from([0x51, 0x57, 0x20, 0x56, 0x65, 0x72, 0x2E, 0x20]);
  return buffer.subarray(0, 8).equals(signature);
}

How to validate .abd files in Go

Go 
func IsABD(data []byte) bool {
    signature := []byte{0x51, 0x57, 0x20, 0x56, 0x65, 0x72, 0x2E, 0x20}
    if len(data) < 8 {
        return false
    }
    return bytes.Equal(data[:8], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .abd file?

A .abd file is a Quicken data file file. Quicken data file

What are the magic bytes for .abd files?

The magic bytes for Quicken data file files are 51 57 20 56 65 72 2E 20 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .abd file?

To validate a .abd file, read the first bytes of the file and compare them against the known magic bytes (51 57 20 56 65 72 2E 20) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .abd files?

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

Is it safe to open .abd files?

Quicken data file (.abd) 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.