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WordPerfect dictionary file (.cbd)

.cbd file signature | application/octet-stream

The WordPerfect dictionary file (CBD) is a data file associated with WordPerfect, a word processing suite originally developed by WordPerfect Corporation and later maintained by Corel. It is used to store spelling dictionary entries and related language data for proofreading and text entry features in WordPerfect and compatible applications. The format is legacy in nature and generally presents low security risk, although older documents should still be opened with standard caution.

Safe

Magic Bytes

Offset 0
43 42 46 49 4C 45

Sources: Gary Kessler

Extension

.cbd

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .cbd files in Python

Python 
def is_cbd(file_path: str) -> bool:
    """Check if file is a valid CBD by magic bytes."""
    signature = bytes([0x43, 0x42, 0x46, 0x49, 0x4C, 0x45])
    with open(file_path, "rb") as f:
        return f.read(6) == signature

How to validate .cbd files in Node.js

Node.js 
function isCBD(buffer: Buffer): boolean {
  const signature = Buffer.from([0x43, 0x42, 0x46, 0x49, 0x4C, 0x45]);
  return buffer.subarray(0, 6).equals(signature);
}

How to validate .cbd files in Go

Go 
func IsCBD(data []byte) bool {
    signature := []byte{0x43, 0x42, 0x46, 0x49, 0x4C, 0x45}
    if len(data) < 6 {
        return false
    }
    return bytes.Equal(data[:6], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .cbd file?

A .cbd file is a WordPerfect dictionary file file. The WordPerfect dictionary file (CBD) is a data file associated with WordPerfect, a word processing suite originally developed by WordPerfect Corporation and later maintained by Corel. It is used to store spelling dictionary entries and related language data for proofreading and text entry features in WordPerfect and compatible applications. The format is legacy in nature and generally presents low security risk, although older documents should still be opened with standard caution.

What are the magic bytes for .cbd files?

The magic bytes for WordPerfect dictionary file files are 43 42 46 49 4C 45 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .cbd file?

To validate a .cbd file, read the first bytes of the file and compare them against the known magic bytes (43 42 46 49 4C 45) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .cbd files?

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

Is it safe to open .cbd files?

WordPerfect dictionary file (.cbd) 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.