Microsoft Windows Mobile personal note file (.pwi)
.pwi file signature | application/octet-stream
Microsoft Windows Mobile personal note file
Magic Bytes
Offset 0
7B 5C 70 77 69
Sources: Gary Kessler
Extension
.pwi
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .pwi files in Python
def is_pwi(file_path: str) -> bool:
"""Check if file is a valid PWI by magic bytes."""
signature = bytes([0x7B, 0x5C, 0x70, 0x77, 0x69])
with open(file_path, "rb") as f:
return f.read(5) == signatureHow to validate .pwi files in Node.js
function isPWI(buffer: Buffer): boolean {
const signature = Buffer.from([0x7B, 0x5C, 0x70, 0x77, 0x69]);
return buffer.subarray(0, 5).equals(signature);
}How to validate .pwi files in Go
func IsPWI(data []byte) bool {
signature := []byte{0x7B, 0x5C, 0x70, 0x77, 0x69}
if len(data) < 5 {
return false
}
return bytes.Equal(data[:5], signature)
}API Endpoint
/api/v1/pwi
curl https://filesignature.org/api/v1/pwi
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .pwi file?
A .pwi file is a Microsoft Windows Mobile personal note file file. Microsoft Windows Mobile personal note file
What are the magic bytes for .pwi files?
The magic bytes for Microsoft Windows Mobile personal note file files are 7B 5C 70 77 69 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .pwi file?
To validate a .pwi file, read the first bytes of the file and compare them against the known magic bytes (7B 5C 70 77 69) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .pwi files?
There is no officially registered MIME type for .pwi files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .pwi files?
Microsoft Windows Mobile personal note file (.pwi) 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.