FT12 (.ft12)
.ft12 file signature | image/x-freehand
Magic Bytes
Offset 0
41 47 44 32
Sources: Apache Tika
All Known Signatures
6 signature variants are documented for .ft12 files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| 41 47 44 32 | 0 | Apache Tika |
| 41 47 44 33 | 0 | Apache Tika |
| 41 47 44 34 | 0 | Apache Tika |
| 46 72 65 65 48 61 6E 64 31 30 | 0 | Apache Tika |
| 46 72 65 65 48 61 6E 64 31 31 | 0 | Apache Tika |
| 46 72 65 65 48 61 6E 64 31 32 | 0 | Apache Tika |
Extension
.ft12
MIME Type
image/x-freehand
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .ft12 files in Python
def is_ft12(file_path: str) -> bool:
"""Check if file is a valid FT12 by magic bytes."""
signature = bytes([0x41, 0x47, 0x44, 0x32])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .ft12 files in Node.js
function isFT12(buffer: Buffer): boolean {
const signature = Buffer.from([0x41, 0x47, 0x44, 0x32]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .ft12 files in Go
func IsFT12(data []byte) bool {
signature := []byte{0x41, 0x47, 0x44, 0x32}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/ft12
curl https://filesignature.org/api/v1/ft12
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .ft12 file?
A .ft12 file is a FT12 file.
What are the magic bytes for .ft12 files?
The magic bytes for FT12 files are 41 47 44 32 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .ft12 file?
To validate a .ft12 file, read the first bytes of the file and compare them against the known magic bytes (41 47 44 32) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .ft12 files?
The primary MIME type for .ft12 files is image/x-freehand.
Is it safe to open .ft12 files?
FT12 (.ft12) 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.