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Google Earth Keyhole Placemark file (.eta)

.eta file signature | application/octet-stream

Google Earth Keyhole Placemark file

Safe

Magic Bytes

Offset 0
23 20 54 68 69 73 20 69 73 20 61 6E 20 4B 65 79

Sources: Gary Kessler

All Known Signatures

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

Hex Signature Offset Sources
23 20 54 68 69 73 20 69 73 20 61 6E 20 4B 65 79 0 Gary Kessler
3C 4B 65 79 68 6F 6C 65 3E 0 Gary Kessler

Extension

.eta

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .eta files in Python

Python
def is_eta(file_path: str) -> bool:
    """Check if file is a valid ETA by magic bytes."""
    signature = bytes([0x23, 0x20, 0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x61, 0x6E, 0x20, 0x4B, 0x65, 0x79])
    with open(file_path, "rb") as f:
        return f.read(16) == signature

How to validate .eta files in Node.js

Node.js
function isETA(buffer: Buffer): boolean {
  const signature = Buffer.from([0x23, 0x20, 0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x61, 0x6E, 0x20, 0x4B, 0x65, 0x79]);
  return buffer.subarray(0, 16).equals(signature);
}

How to validate .eta files in Go

Go
func IsETA(data []byte) bool {
    signature := []byte{0x23, 0x20, 0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x61, 0x6E, 0x20, 0x4B, 0x65, 0x79}
    if len(data) < 16 {
        return false
    }
    return bytes.Equal(data[:16], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .eta file?

A .eta file is a Google Earth Keyhole Placemark file file. Google Earth Keyhole Placemark file

What are the magic bytes for .eta files?

The magic bytes for Google Earth Keyhole Placemark file files are 23 20 54 68 69 73 20 69 73 20 61 6E 20 4B 65 79 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .eta file?

To validate a .eta file, read the first bytes of the file and compare them against the known magic bytes (23 20 54 68 69 73 20 69 73 20 61 6E 20 4B 65 79) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .eta files?

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

Is it safe to open .eta files?

Google Earth Keyhole Placemark file (.eta) 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.