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HPSETTINGS (.hpsettings)

.hpsettings file signature | application/octet-stream

HPSETTINGS is a configuration file format used by HP Prime graphing calculators and associated software, developed and maintained by Hewlett-Packard and its successors. It stores calculator preferences, user interface settings, and other device parameters for transferring or restoring HP Prime environments. The format is generally safe, but files from untrusted sources should be reviewed before import because they may alter device behavior; it is not considered a legacy format.

Safe

Magic Bytes

Offset 0
7C 61 8A B2

Sources: Wikipedia

Extension

.hpsettings

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .hpsettings files in Python

Python 
def is_hpsettings(file_path: str) -> bool:
    """Check if file is a valid HPSETTINGS by magic bytes."""
    signature = bytes([0x7C, 0x61, 0x8A, 0xB2])
    with open(file_path, "rb") as f:
        return f.read(4) == signature

How to validate .hpsettings files in Node.js

Node.js 
function isHPSETTINGS(buffer: Buffer): boolean {
  const signature = Buffer.from([0x7C, 0x61, 0x8A, 0xB2]);
  return buffer.subarray(0, 4).equals(signature);
}

How to validate .hpsettings files in Go

Go 
func IsHPSETTINGS(data []byte) bool {
    signature := []byte{0x7C, 0x61, 0x8A, 0xB2}
    if len(data) < 4 {
        return false
    }
    return bytes.Equal(data[:4], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Related Formats

.hpapp .hpprgm

Frequently Asked Questions

What is a .hpsettings file?

A .hpsettings file is identified by the magic bytes 7C 61 8A B2 at byte offset 0. HPSETTINGS is a configuration file format used by HP Prime graphing calculators and associated software, developed and maintained by Hewlett-Packard and its successors. It stores calculator preferences, user interface settings, and other device parameters for transferring or restoring HP Prime environments. The format is generally safe, but files from untrusted sources should be reviewed before import because they may alter device behavior; it is not considered a legacy format.

What are the magic bytes for .hpsettings files?

The magic bytes for HPSETTINGS files are 7C 61 8A B2 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .hpsettings file?

To validate a .hpsettings file, read the first bytes of the file and compare them against the known magic bytes (7C 61 8A B2) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .hpsettings files?

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

Is it safe to open .hpsettings files?

HPSETTINGS (.hpsettings) 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.