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ILBM (.ilbm)

.ilbm file signature | application/octet-stream

IFFInterleaved Bitmap Image

Safe

Magic Bytes

Offset 0
46 4F 52 4D 49 4C 42 4D

Sources: Wikipedia

Extension

.ilbm

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .ilbm files in Python

Python
def is_ilbm(file_path: str) -> bool:
    """Check if file is a valid ILBM by magic bytes."""
    signature = bytes([0x46, 0x4F, 0x52, 0x4D, 0x49, 0x4C, 0x42, 0x4D])
    with open(file_path, "rb") as f:
        return f.read(8) == signature

How to validate .ilbm files in Node.js

Node.js
function isILBM(buffer: Buffer): boolean {
  const signature = Buffer.from([0x46, 0x4F, 0x52, 0x4D, 0x49, 0x4C, 0x42, 0x4D]);
  return buffer.subarray(0, 8).equals(signature);
}

How to validate .ilbm files in Go

Go
func IsILBM(data []byte) bool {
    signature := []byte{0x46, 0x4F, 0x52, 0x4D, 0x49, 0x4C, 0x42, 0x4D}
    if len(data) < 8 {
        return false
    }
    return bytes.Equal(data[:8], signature)
}

API Endpoint

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

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .ilbm file?

A .ilbm file is a ILBM file. IFFInterleaved Bitmap Image

What are the magic bytes for .ilbm files?

The magic bytes for ILBM files are 46 4F 52 4D 49 4C 42 4D at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .ilbm file?

To validate a .ilbm file, read the first bytes of the file and compare them against the known magic bytes (46 4F 52 4D 49 4C 42 4D) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .ilbm files?

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

Is it safe to open .ilbm files?

ILBM (.ilbm) 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.