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GPKG (.gpkg)

.gpkg file signature | application/x-geopackage

Safe

Magic Bytes

Offset 0
53 51 4C 69 74 65 20 66 6F 72 6D 61 74 20 33 00

Sources: Apache Tika

Extension

.gpkg

MIME Type

application/x-geopackage, application/x-geopackage; version=1.1Or1.0

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .gpkg files in Python

Python 
def is_gpkg(file_path: str) -> bool:
    """Check if file is a valid GPKG by magic bytes."""
    signature = bytes([0x53, 0x51, 0x4C, 0x69, 0x74, 0x65, 0x20, 0x66, 0x6F, 0x72, 0x6D, 0x61, 0x74, 0x20, 0x33, 0x00])
    with open(file_path, "rb") as f:
        return f.read(16) == signature

How to validate .gpkg files in Node.js

Node.js 
function isGPKG(buffer: Buffer): boolean {
  const signature = Buffer.from([0x53, 0x51, 0x4C, 0x69, 0x74, 0x65, 0x20, 0x66, 0x6F, 0x72, 0x6D, 0x61, 0x74, 0x20, 0x33, 0x00]);
  return buffer.subarray(0, 16).equals(signature);
}

How to validate .gpkg files in Go

Go 
func IsGPKG(data []byte) bool {
    signature := []byte{0x53, 0x51, 0x4C, 0x69, 0x74, 0x65, 0x20, 0x66, 0x6F, 0x72, 0x6D, 0x61, 0x74, 0x20, 0x33, 0x00}
    if len(data) < 16 {
        return false
    }
    return bytes.Equal(data[:16], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .gpkg file?

A .gpkg file is a GPKG file.

What are the magic bytes for .gpkg files?

The magic bytes for GPKG files are 53 51 4C 69 74 65 20 66 6F 72 6D 61 74 20 33 00 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .gpkg file?

To validate a .gpkg file, read the first bytes of the file and compare them against the known magic bytes (53 51 4C 69 74 65 20 66 6F 72 6D 61 74 20 33 00) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .gpkg files?

The primary MIME type for .gpkg files is application/x-geopackage. Additional MIME types include: application/x-geopackage, application/x-geopackage; version=1.1Or1.0.

Is it safe to open .gpkg files?

GPKG (.gpkg) 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.