WAD

application/octet-stream

Safe

Magic Bytes

Offset: 0
49 57 41 44

WAD, an acronym for "Where's All the Data," is a legacy data package format originally developed by id Software for the Doom game engine. This format serves as a container for game assets, including textures, sound effects, level maps, and sprites, utilized primarily in early first-person shooters. While generally considered safe due to its static nature, this format is now largely obsolete in modern game development, having been replaced by more efficient, standardized compressed archive systems.

Extension

.wad

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .wad files in Python

Python
def is_wad(file_path: str) -> bool:
    """Check if file is a valid WAD by magic bytes."""
    signature = bytes([0x49, 0x57, 0x41, 0x44])
    with open(file_path, "rb") as f:
        return f.read(4) == signature

How to validate .wad files in Node.js

Node.js
function isWAD(buffer: Buffer): boolean {
  const signature = Buffer.from([0x49, 0x57, 0x41, 0x44]);
  return buffer.subarray(0, 4).equals(signature);
}
Go
func IsWAD(data []byte) bool {
    signature := []byte{0x49, 0x57, 0x41, 0x44}
    if len(data) < 4 {
        return false
    }
    return bytes.Equal(data[:4], signature)
}

API Endpoint

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

Related Formats