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WordPerfect text file magic bytes (.wpf)

.wpf file signature: 81 CD AB | application/octet-stream

WordPerfect text file (WPF) is a document format associated with Corel's WordPerfect word processor, which created and maintains the format. It is used for saving and exchanging formatted text documents in WordPerfect-based publishing, legal, and office workflows, and can be opened by WordPerfect and some compatible editors. The format is legacy in modern environments, but it is generally considered safe; however, older documents may not render consistently in other software.

Safe

Magic Bytes

Offset 0
81 CD AB

Sources: Gary Kessler

Extension

.wpf

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .wpf files in Python

Python 
def is_wpf(file_path: str) -> bool:
    """Check if file is a valid WPF by magic bytes."""
    signature = bytes([0x81, 0xCD, 0xAB])
    with open(file_path, "rb") as f:
        return f.read(3) == signature

How to validate .wpf files in Node.js

Node.js 
function isWPF(buffer: Buffer): boolean {
  const signature = Buffer.from([0x81, 0xCD, 0xAB]);
  return buffer.subarray(0, 3).equals(signature);
}

How to validate .wpf files in Go

Go 
func IsWPF(data []byte) bool {
    signature := []byte{0x81, 0xCD, 0xAB}
    if len(data) < 3 {
        return false
    }
    return bytes.Equal(data[:3], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .wpf file?

A .wpf file is a WordPerfect text file. WordPerfect text file (WPF) is a document format associated with Corel's WordPerfect word processor, which created and maintains the format. It is used for saving and exchanging formatted text documents in WordPerfect-based publishing, legal, and office workflows, and can be opened by WordPerfect and some compatible editors. The format is legacy in modern environments, but it is generally considered safe; however, older documents may not render consistently in other software.

What are the magic bytes for .wpf files?

The magic bytes for WordPerfect text file (.wpf) files are 81 CD AB at byte offset 0. These bytes identify the file format more reliably than the extension alone.

How do I validate a .wpf file?

To validate a .wpf file, read the first bytes of the file and compare them against the known magic bytes (81 CD AB) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .wpf files?

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

Is it safe to open .wpf files?

WordPerfect text file (.wpf) 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.