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Windows Media Player playlist (.wpl)

.wpl file signature | application/octet-stream

Windows Media Player playlist

Safe

Magic Bytes

Offset 0
84 54 BE FF E4 69 63 72 6F 73 6F 66 74 20 57 69 6E 64 6F 77 73 20 4D 65 64 69 61 20 50 6C 61 79 65 72 20 2D 2D 20

Sources: Gary Kessler

Extension

.wpl

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .wpl files in Python

Python 
def is_wpl(file_path: str) -> bool:
    """Check if file is a valid WPL by magic bytes."""
    signature = bytes([0x84, 0x54, 0xBE, 0xFF, 0xE4, 0x69, 0x63, 0x72, 0x6F, 0x73, 0x6F, 0x66, 0x74, 0x20, 0x57, 0x69, 0x6E, 0x64, 0x6F, 0x77, 0x73, 0x20, 0x4D, 0x65, 0x64, 0x69, 0x61, 0x20, 0x50, 0x6C, 0x61, 0x79, 0x65, 0x72, 0x20, 0x2D, 0x2D, 0x20])
    with open(file_path, "rb") as f:
        return f.read(38) == signature

How to validate .wpl files in Node.js

Node.js 
function isWPL(buffer: Buffer): boolean {
  const signature = Buffer.from([0x84, 0x54, 0xBE, 0xFF, 0xE4, 0x69, 0x63, 0x72, 0x6F, 0x73, 0x6F, 0x66, 0x74, 0x20, 0x57, 0x69, 0x6E, 0x64, 0x6F, 0x77, 0x73, 0x20, 0x4D, 0x65, 0x64, 0x69, 0x61, 0x20, 0x50, 0x6C, 0x61, 0x79, 0x65, 0x72, 0x20, 0x2D, 0x2D, 0x20]);
  return buffer.subarray(0, 38).equals(signature);
}

How to validate .wpl files in Go

Go 
func IsWPL(data []byte) bool {
    signature := []byte{0x84, 0x54, 0xBE, 0xFF, 0xE4, 0x69, 0x63, 0x72, 0x6F, 0x73, 0x6F, 0x66, 0x74, 0x20, 0x57, 0x69, 0x6E, 0x64, 0x6F, 0x77, 0x73, 0x20, 0x4D, 0x65, 0x64, 0x69, 0x61, 0x20, 0x50, 0x6C, 0x61, 0x79, 0x65, 0x72, 0x20, 0x2D, 0x2D, 0x20}
    if len(data) < 38 {
        return false
    }
    return bytes.Equal(data[:38], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .wpl file?

A .wpl file is a Windows Media Player playlist file. Windows Media Player playlist

What are the magic bytes for .wpl files?

The magic bytes for Windows Media Player playlist files are 84 54 BE FF E4 69 63 72 6F 73 6F 66 74 20 57 69 6E 64 6F 77 73 20 4D 65 64 69 61 20 50 6C 61 79 65 72 20 2D 2D 20 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .wpl file?

To validate a .wpl file, read the first bytes of the file and compare them against the known magic bytes (84 54 BE FF E4 69 63 72 6F 73 6F 66 74 20 57 69 6E 64 6F 77 73 20 4D 65 64 69 61 20 50 6C 61 79 65 72 20 2D 2D 20) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .wpl files?

There is no officially registered MIME type for .wpl files. Systems typically use application/octet-stream as a generic fallback when handling this format.

Is it safe to open .wpl files?

Windows Media Player playlist (.wpl) 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.