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Windows application log (.lgd)

.lgd file signature | application/octet-stream

Windows application log

Safe

Magic Bytes

Offset 0
7B 0D 0A 6F 20

Sources: Gary Kessler

Extension

.lgd

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .lgd files in Python

Python
def is_lgd(file_path: str) -> bool:
    """Check if file is a valid LGD by magic bytes."""
    signature = bytes([0x7B, 0x0D, 0x0A, 0x6F, 0x20])
    with open(file_path, "rb") as f:
        return f.read(5) == signature

How to validate .lgd files in Node.js

Node.js
function isLGD(buffer: Buffer): boolean {
  const signature = Buffer.from([0x7B, 0x0D, 0x0A, 0x6F, 0x20]);
  return buffer.subarray(0, 5).equals(signature);
}

How to validate .lgd files in Go

Go
func IsLGD(data []byte) bool {
    signature := []byte{0x7B, 0x0D, 0x0A, 0x6F, 0x20}
    if len(data) < 5 {
        return false
    }
    return bytes.Equal(data[:5], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .lgd file?

A .lgd file is a Windows application log file. Windows application log

What are the magic bytes for .lgd files?

The magic bytes for Windows application log files are 7B 0D 0A 6F 20 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .lgd file?

To validate a .lgd file, read the first bytes of the file and compare them against the known magic bytes (7B 0D 0A 6F 20) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .lgd files?

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

Is it safe to open .lgd files?

Windows application log (.lgd) 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.