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DWF (.dwf)

.dwf file signature | model/vnd.dwf

Safe

Magic Bytes

Offset 0
28 44 57 46 20 56

Sources: Apache Tika

Extension

.dwf

MIME Type

model/vnd.dwf

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .dwf files in Python

Python 
def is_dwf(file_path: str) -> bool:
    """Check if file is a valid DWF by magic bytes."""
    signature = bytes([0x28, 0x44, 0x57, 0x46, 0x20, 0x56])
    with open(file_path, "rb") as f:
        return f.read(6) == signature

How to validate .dwf files in Node.js

Node.js 
function isDWF(buffer: Buffer): boolean {
  const signature = Buffer.from([0x28, 0x44, 0x57, 0x46, 0x20, 0x56]);
  return buffer.subarray(0, 6).equals(signature);
}

How to validate .dwf files in Go

Go 
func IsDWF(data []byte) bool {
    signature := []byte{0x28, 0x44, 0x57, 0x46, 0x20, 0x56}
    if len(data) < 6 {
        return false
    }
    return bytes.Equal(data[:6], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .dwf file?

A .dwf file is a DWF file.

What are the magic bytes for .dwf files?

The magic bytes for DWF files are 28 44 57 46 20 56 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .dwf file?

To validate a .dwf file, read the first bytes of the file and compare them against the known magic bytes (28 44 57 46 20 56) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .dwf files?

The primary MIME type for .dwf files is model/vnd.dwf.

Is it safe to open .dwf files?

DWF (.dwf) 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.