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Internet Explorer v11 Tracking Protection List file (.tpl)

.tpl file signature | application/octet-stream

Internet Explorer v11 Tracking Protection List file

Safe

Magic Bytes

Offset 0
00 20 AF 30

Sources: Gary Kessler

All Known Signatures

2 signature variants are documented for .tpl files across multiple sources.

Hex Signature Offset Sources
00 20 AF 30 0 Gary Kessler
6D 73 46 69 6C 74 65 72 4C 69 73 74 0 Gary Kessler

Extension

.tpl

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .tpl files in Python

Python
def is_tpl(file_path: str) -> bool:
    """Check if file is a valid TPL by magic bytes."""
    signature = bytes([0x00, 0x20, 0xAF, 0x30])
    with open(file_path, "rb") as f:
        return f.read(4) == signature

How to validate .tpl files in Node.js

Node.js
function isTPL(buffer: Buffer): boolean {
  const signature = Buffer.from([0x00, 0x20, 0xAF, 0x30]);
  return buffer.subarray(0, 4).equals(signature);
}

How to validate .tpl files in Go

Go
func IsTPL(data []byte) bool {
    signature := []byte{0x00, 0x20, 0xAF, 0x30}
    if len(data) < 4 {
        return false
    }
    return bytes.Equal(data[:4], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .tpl file?

A .tpl file is a Internet Explorer v11 Tracking Protection List file file. Internet Explorer v11 Tracking Protection List file

What are the magic bytes for .tpl files?

The magic bytes for Internet Explorer v11 Tracking Protection List file files are 00 20 AF 30 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .tpl file?

To validate a .tpl file, read the first bytes of the file and compare them against the known magic bytes (00 20 AF 30) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .tpl files?

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

Is it safe to open .tpl files?

Internet Explorer v11 Tracking Protection List file (.tpl) 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.