VPK
application/octet-stream
Magic Bytes
Offset: 0
34 12 AA 55
Valve Pak (VPK) is a proprietary archive format developed and maintained by Valve Corporation for the Source and Source 2 engine ecosystems. This format primarily serves to package game assets, including textures, 3D models, and audio files, for distribution in titles like Dota 2 and Counter-Strike. Although generally safe, VPK archives can be modified to alter game behavior; consequently, users should only download third-party modifications from trusted sources to ensure application stability and security.
Validation Code
How to validate .vpk files in Python
Python
def is_vpk(file_path: str) -> bool:
"""Check if file is a valid VPK by magic bytes."""
signature = bytes([0x34, 0x12, 0xAA, 0x55])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .vpk files in Node.js
Node.js
function isVPK(buffer: Buffer): boolean {
const signature = Buffer.from([0x34, 0x12, 0xAA, 0x55]);
return buffer.subarray(0, 4).equals(signature);
}
Go
func IsVPK(data []byte) bool {
signature := []byte{0x34, 0x12, 0xAA, 0x55}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
GET
/api/v1/vpk
curl https://filesignature.org/api/v1/vpk