Skip to content

WP61 (.wp61)

.wp61 file signature | application/vnd.wordperfect

WordPerfect 6.1 (WP61) is a legacy word-processing document format developed by WordPerfect Corporation and later maintained by Corel as part of the WordPerfect family. It was used for creating letters, reports, legal documents, and other formatted text files in desktop publishing and office workflows. The format is considered safe, though as an older proprietary document type it may require compatibility software for reliable opening and conversion.

Safe

Magic Bytes

Offset 0
61 70 70 6C 69 63 61 74 69 6F 6E 2F 76 6E 64 2E 77 6F 72 64 70 65 72 66 65 63 74 3B

Sources: Apache Tika

All Known Signatures

2 signature variants are documented for .wp61 files across multiple sources.

Hex Signature Offset Sources
61 70 70 6C 69 63 61 74 69 6F 6E 2F 76 6E 64 2E 77 6F 72 64 70 65 72 66 65 63 74 3B 0 Apache Tika
FF 57 50 43 0 Apache Tika

Extension

.wp61

MIME Type

application/vnd.wordperfect

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .wp61 files in Python

Python 
def is_wp61(file_path: str) -> bool:
    """Check if file is a valid WP61 by magic bytes."""
    signature = bytes([0x61, 0x70, 0x70, 0x6C, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6F, 0x6E, 0x2F, 0x76, 0x6E, 0x64, 0x2E, 0x77, 0x6F, 0x72, 0x64, 0x70, 0x65, 0x72, 0x66, 0x65, 0x63, 0x74, 0x3B])
    with open(file_path, "rb") as f:
        return f.read(28) == signature

How to validate .wp61 files in Node.js

Node.js 
function isWP61(buffer: Buffer): boolean {
  const signature = Buffer.from([0x61, 0x70, 0x70, 0x6C, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6F, 0x6E, 0x2F, 0x76, 0x6E, 0x64, 0x2E, 0x77, 0x6F, 0x72, 0x64, 0x70, 0x65, 0x72, 0x66, 0x65, 0x63, 0x74, 0x3B]);
  return buffer.subarray(0, 28).equals(signature);
}

How to validate .wp61 files in Go

Go 
func IsWP61(data []byte) bool {
    signature := []byte{0x61, 0x70, 0x70, 0x6C, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6F, 0x6E, 0x2F, 0x76, 0x6E, 0x64, 0x2E, 0x77, 0x6F, 0x72, 0x64, 0x70, 0x65, 0x72, 0x66, 0x65, 0x63, 0x74, 0x3B}
    if len(data) < 28 {
        return false
    }
    return bytes.Equal(data[:28], signature)
}

API Endpoint

GET /api/v1/wp61
curl https://filesignature.org/api/v1/wp61

See the full API documentation for all endpoints and parameters.

Related Formats

.w60 .wpt .wp .wp5 .wp6 .wpd

Frequently Asked Questions

What is a .wp61 file?

A .wp61 file is identified by the magic bytes 61 70 70 6C 69 63 61 74 69 6F 6E 2F 76 6E 64 2E 77 6F 72 64 70 65 72 66 65 63 74 3B at byte offset 0. WordPerfect 6.1 (WP61) is a legacy word-processing document format developed by WordPerfect Corporation and later maintained by Corel as part of the WordPerfect family. It was used for creating letters, reports, legal documents, and other formatted text files in desktop publishing and office workflows. The format is considered safe, though as an older proprietary document type it may require compatibility software for reliable opening and conversion.

What are the magic bytes for .wp61 files?

The magic bytes for WP61 files are 61 70 70 6C 69 63 61 74 69 6F 6E 2F 76 6E 64 2E 77 6F 72 64 70 65 72 66 65 63 74 3B at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .wp61 file?

To validate a .wp61 file, read the first bytes of the file and compare them against the known magic bytes (61 70 70 6C 69 63 61 74 69 6F 6E 2F 76 6E 64 2E 77 6F 72 64 70 65 72 66 65 63 74 3B) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .wp61 files?

The primary MIME type for .wp61 files is application/vnd.wordperfect.

Is it safe to open .wp61 files?

WP61 (.wp61) 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.