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JPG2 (.jpg2)

.jpg2 file signature | application/octet-stream

JPEG 2000format[18]

Safe

Magic Bytes

Offset 0
00 00 00 0C 6A 50 20 20 0D 0A 87 0A

Sources: Wikipedia

Extension

.jpg2

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .jpg2 files in Python

Python 
def is_jpg2(file_path: str) -> bool:
    """Check if file is a valid JPG2 by magic bytes."""
    signature = bytes([0x00, 0x00, 0x00, 0x0C, 0x6A, 0x50, 0x20, 0x20, 0x0D, 0x0A, 0x87, 0x0A])
    with open(file_path, "rb") as f:
        return f.read(12) == signature

How to validate .jpg2 files in Node.js

Node.js 
function isJPG2(buffer: Buffer): boolean {
  const signature = Buffer.from([0x00, 0x00, 0x00, 0x0C, 0x6A, 0x50, 0x20, 0x20, 0x0D, 0x0A, 0x87, 0x0A]);
  return buffer.subarray(0, 12).equals(signature);
}

How to validate .jpg2 files in Go

Go 
func IsJPG2(data []byte) bool {
    signature := []byte{0x00, 0x00, 0x00, 0x0C, 0x6A, 0x50, 0x20, 0x20, 0x0D, 0x0A, 0x87, 0x0A}
    if len(data) < 12 {
        return false
    }
    return bytes.Equal(data[:12], signature)
}

API Endpoint

GET /api/v1/jpg2
curl https://filesignature.org/api/v1/jpg2

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .jpg2 file?

A .jpg2 file is a JPG2 file. JPEG 2000format[18]

What are the magic bytes for .jpg2 files?

The magic bytes for JPG2 files are 00 00 00 0C 6A 50 20 20 0D 0A 87 0A at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .jpg2 file?

To validate a .jpg2 file, read the first bytes of the file and compare them against the known magic bytes (00 00 00 0C 6A 50 20 20 0D 0A 87 0A) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .jpg2 files?

There is no officially registered MIME type for .jpg2 files. Systems typically use application/octet-stream as a generic fallback when handling this format.

Is it safe to open .jpg2 files?

JPG2 (.jpg2) 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.