ELC (.elc)
.elc file signature | application/octet-stream
Magic Bytes
Offset 10
23 20 54 68 69 73 20 69 73 20 61 20 73 68 65 6C 6C 20 61 72 63 68 69 76 65
Sources: Apache Tika
All Known Signatures
8 signature variants are documented for .elc files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| 23 20 54 68 69 73 20 69 73 20 61 20 73 68 65 6C 6C 20 61 72 63 68 69 76 65 | 10 | Apache Tika |
| 1F 1E | 0 | Apache Tika |
| 30 31 37 34 33 37 | 0 | Apache Tika |
| 1F FF | 0 | Apache Tika |
| FF 1F | 0 | Apache Tika |
| 30 31 34 35 34 30 35 | 0 | Apache Tika |
| 0A 28 | 0 | Apache Tika |
| 3B 45 4C 43 13 00 00 00 | 0 | Apache Tika |
Extension
.elc
MIME Type
application/octet-stream, application/x-elc
Byte Offset
10
Risk Level
Safe
Validation Code
How to validate .elc files in Python
def is_elc(file_path: str) -> bool:
"""Check if file is a valid ELC by magic bytes."""
signature = bytes([0x23, 0x20, 0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x61, 0x20, 0x73, 0x68, 0x65, 0x6C, 0x6C, 0x20, 0x61, 0x72, 0x63, 0x68, 0x69, 0x76, 0x65])
with open(file_path, "rb") as f:
return f.read(25) == signatureHow to validate .elc files in Node.js
function isELC(buffer: Buffer): boolean {
const signature = Buffer.from([0x23, 0x20, 0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x61, 0x20, 0x73, 0x68, 0x65, 0x6C, 0x6C, 0x20, 0x61, 0x72, 0x63, 0x68, 0x69, 0x76, 0x65]);
return buffer.subarray(0, 25).equals(signature);
}How to validate .elc files in Go
func IsELC(data []byte) bool {
signature := []byte{0x23, 0x20, 0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x61, 0x20, 0x73, 0x68, 0x65, 0x6C, 0x6C, 0x20, 0x61, 0x72, 0x63, 0x68, 0x69, 0x76, 0x65}
if len(data) < 25 {
return false
}
return bytes.Equal(data[:25], signature)
}API Endpoint
/api/v1/elc
curl https://filesignature.org/api/v1/elc
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .elc file?
A .elc file is a ELC file.
What are the magic bytes for .elc files?
The magic bytes for ELC files are 23 20 54 68 69 73 20 69 73 20 61 20 73 68 65 6C 6C 20 61 72 63 68 69 76 65 at byte offset 10. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .elc file?
To validate a .elc file, read the first bytes of the file and compare them against the known magic bytes (23 20 54 68 69 73 20 69 73 20 61 20 73 68 65 6C 6C 20 61 72 63 68 69 76 65) at offset 10. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .elc files?
The primary MIME type for .elc files is application/octet-stream. Additional MIME types include: application/octet-stream, application/x-elc.
Is it safe to open .elc files?
ELC (.elc) 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.