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LUAC (.luac)

.luac file signature | application/octet-stream

Luabytecode[74]

Safe

Magic Bytes

Offset 0
1B 4C 75 61

Sources: Wikipedia

Extension

.luac

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .luac files in Python

Python
def is_luac(file_path: str) -> bool:
    """Check if file is a valid LUAC by magic bytes."""
    signature = bytes([0x1B, 0x4C, 0x75, 0x61])
    with open(file_path, "rb") as f:
        return f.read(4) == signature

How to validate .luac files in Node.js

Node.js
function isLUAC(buffer: Buffer): boolean {
  const signature = Buffer.from([0x1B, 0x4C, 0x75, 0x61]);
  return buffer.subarray(0, 4).equals(signature);
}

How to validate .luac files in Go

Go
func IsLUAC(data []byte) bool {
    signature := []byte{0x1B, 0x4C, 0x75, 0x61}
    if len(data) < 4 {
        return false
    }
    return bytes.Equal(data[:4], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .luac file?

A .luac file is a LUAC file. Luabytecode[74]

What are the magic bytes for .luac files?

The magic bytes for LUAC files are 1B 4C 75 61 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .luac file?

To validate a .luac file, read the first bytes of the file and compare them against the known magic bytes (1B 4C 75 61) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .luac files?

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

Is it safe to open .luac files?

LUAC (.luac) 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.