DFONT (.dfont)

.dfont file signature | application/octet-stream

TrueTypefont

Safe

Magic Bytes

Offset 0


              00 01 00 00 00

Sources: Wikipedia

Extension

.dfont

MIME Type

application/octet-stream

Byte Offset

Risk Level

Safe

Validation Code

How to validate .dfont files in Python

Python

def is_dfont(file_path: str) -> bool:
    """Check if file is a valid DFONT by magic bytes."""
    signature = bytes([0x00, 0x01, 0x00, 0x00, 0x00])
    with open(file_path, "rb") as f:
        return f.read(5) == signature

How to validate .dfont files in Node.js

Node.js

function isDFONT(buffer: Buffer): boolean {
  const signature = Buffer.from([0x00, 0x01, 0x00, 0x00, 0x00]);
  return buffer.subarray(0, 5).equals(signature);
}

How to validate .dfont files in Go

func IsDFONT(data []byte) bool {
    signature := []byte{0x00, 0x01, 0x00, 0x00, 0x00}
    if len(data) < 5 {
        return false
    }
    return bytes.Equal(data[:5], signature)
}

API Endpoint

GET /api/v1/dfont


              curl https://filesignature.org/api/v1/dfont

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .dfont file?

A .dfont file is a DFONT file. TrueTypefont

What are the magic bytes for .dfont files?

The magic bytes for DFONT files are 00 01 00 00 00 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .dfont file?

To validate a .dfont file, read the first bytes of the file and compare them against the known magic bytes (00 01 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 .dfont files?

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

Is it safe to open .dfont files?

DFONT (.dfont) 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.