FLM (.flm)
.flm file signature | application/octet-stream
FLM is a project file format used by FL Studio Mobile, a music production application developed and maintained by Image-Line. It stores arrangement data, instrument settings, audio clips, and automation for composing and editing songs within the app. The format is generally safe and is intended for trusted project files, though as with any application-specific file, it should be opened with supported software to avoid compatibility issues.
Magic Bytes
Offset 0
31 30 4C 46
Sources: Wikipedia
Extension
.flm
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .flm files in Python
def is_flm(file_path: str) -> bool:
"""Check if file is a valid FLM by magic bytes."""
signature = bytes([0x31, 0x30, 0x4C, 0x46])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .flm files in Node.js
function isFLM(buffer: Buffer): boolean {
const signature = Buffer.from([0x31, 0x30, 0x4C, 0x46]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .flm files in Go
func IsFLM(data []byte) bool {
signature := []byte{0x31, 0x30, 0x4C, 0x46}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/flm
curl https://filesignature.org/api/v1/flm
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .flm file?
A .flm file is identified by the magic bytes 31 30 4C 46 at byte offset 0. FLM is a project file format used by FL Studio Mobile, a music production application developed and maintained by Image-Line. It stores arrangement data, instrument settings, audio clips, and automation for composing and editing songs within the app. The format is generally safe and is intended for trusted project files, though as with any application-specific file, it should be opened with supported software to avoid compatibility issues.
What are the magic bytes for .flm files?
The magic bytes for FLM files are 31 30 4C 46 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .flm file?
To validate a .flm file, read the first bytes of the file and compare them against the known magic bytes (31 30 4C 46) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .flm files?
There is no officially registered MIME type for .flm files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .flm files?
FLM (.flm) 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.