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Quicken price history file (.qph)

.qph file signature | application/octet-stream

Quicken price history file is a data file used by Quicken, a personal finance application originally developed by Intuit and now maintained by Quicken Inc. It stores historical security price information for investments and is used by the application to update portfolio values, charts, and transaction records. The format is associated with legacy desktop financial data and should be opened only in trusted Quicken environments.

Safe

Magic Bytes

Offset 0
03 00 00 00

Sources: Gary Kessler

Extension

.qph

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .qph files in Python

Python 
def is_qph(file_path: str) -> bool:
    """Check if file is a valid QPH by magic bytes."""
    signature = bytes([0x03, 0x00, 0x00, 0x00])
    with open(file_path, "rb") as f:
        return f.read(4) == signature

How to validate .qph files in Node.js

Node.js 
function isQPH(buffer: Buffer): boolean {
  const signature = Buffer.from([0x03, 0x00, 0x00, 0x00]);
  return buffer.subarray(0, 4).equals(signature);
}

How to validate .qph files in Go

Go 
func IsQPH(data []byte) bool {
    signature := []byte{0x03, 0x00, 0x00, 0x00}
    if len(data) < 4 {
        return false
    }
    return bytes.Equal(data[:4], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Related Formats

.adx .nfc

Frequently Asked Questions

What is a .qph file?

A .qph file is a Quicken price history file file. Quicken price history file is a data file used by Quicken, a personal finance application originally developed by Intuit and now maintained by Quicken Inc. It stores historical security price information for investments and is used by the application to update portfolio values, charts, and transaction records. The format is associated with legacy desktop financial data and should be opened only in trusted Quicken environments.

What are the magic bytes for .qph files?

The magic bytes for Quicken price history file files are 03 00 00 00 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .qph file?

To validate a .qph file, read the first bytes of the file and compare them against the known magic bytes (03 00 00 00) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .qph files?

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

Is it safe to open .qph files?

Quicken price history file (.qph) 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.