Paint (.pdn)
.pdn file signature | application/octet-stream
Paint.NET image (v3)
Magic Bytes
Offset 0
50 44 4E 33
Sources: Gary Kessler
Extension
.pdn
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .pdn files in Python
def is_pdn(file_path: str) -> bool:
"""Check if file is a valid PDN by magic bytes."""
signature = bytes([0x50, 0x44, 0x4E, 0x33])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .pdn files in Node.js
function isPDN(buffer: Buffer): boolean {
const signature = Buffer.from([0x50, 0x44, 0x4E, 0x33]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .pdn files in Go
func IsPDN(data []byte) bool {
signature := []byte{0x50, 0x44, 0x4E, 0x33}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/pdn
curl https://filesignature.org/api/v1/pdn
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .pdn file?
A .pdn file is a Paint file. Paint.NET image (v3)
What are the magic bytes for .pdn files?
The magic bytes for Paint files are 50 44 4E 33 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .pdn file?
To validate a .pdn file, read the first bytes of the file and compare them against the known magic bytes (50 44 4E 33) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .pdn files?
There is no officially registered MIME type for .pdn files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .pdn files?
Paint (.pdn) 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.