ZSOFT Paintbrush file
image/vnd.zbrush.pcx
Magic Bytes
Offset: 0
0A
ZSoft Paintbrush (PCX) is a raster image format originally developed by ZSoft Corporation for the PC Paintbrush application. It served as one of the first widely accepted graphics standards for MS-DOS systems, utilized for digital artwork, desktop publishing, and low-resolution image storage. Although now considered a legacy format replaced by PNG and JPEG, PCX is viewed as safe because it does not support executable scripts or modern metadata-based attack vectors.
Validation Code
How to validate .pcx files in Python
Python
def is_pcx(file_path: str) -> bool:
"""Check if file is a valid PCX by magic bytes."""
signature = bytes([0x0A])
with open(file_path, "rb") as f:
return f.read(1) == signatureHow to validate .pcx files in Node.js
Node.js
function isPCX(buffer: Buffer): boolean {
const signature = Buffer.from([0x0A]);
return buffer.subarray(0, 1).equals(signature);
}
Go
func IsPCX(data []byte) bool {
signature := []byte{0x0A}
if len(data) < 1 {
return false
}
return bytes.Equal(data[:1], signature)
}API Endpoint
GET
/api/v1/pcx
curl https://filesignature.org/api/v1/pcx