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JPC (.jpc)

.jpc 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

.jpc

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .jpc files in Python

Python 
def is_jpc(file_path: str) -> bool:
    """Check if file is a valid JPC 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 .jpc files in Node.js

Node.js 
function isJPC(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 .jpc files in Go

Go 
func IsJPC(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/jpc
curl https://filesignature.org/api/v1/jpc

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .jpc file?

A .jpc file is a JPC file. JPEG 2000format[18]

What are the magic bytes for .jpc files?

The magic bytes for JPC 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 .jpc file?

To validate a .jpc 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 .jpc files?

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

Is it safe to open .jpc files?

JPC (.jpc) 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.