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FT10 (.ft10)

.ft10 file signature | image/x-freehand

Safe

Magic Bytes

Offset 0
41 47 44 32

Sources: Apache Tika

All Known Signatures

6 signature variants are documented for .ft10 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

.ft10

MIME Type

image/x-freehand

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .ft10 files in Python

Python
def is_ft10(file_path: str) -> bool:
    """Check if file is a valid FT10 by magic bytes."""
    signature = bytes([0x41, 0x47, 0x44, 0x32])
    with open(file_path, "rb") as f:
        return f.read(4) == signature

How to validate .ft10 files in Node.js

Node.js
function isFT10(buffer: Buffer): boolean {
  const signature = Buffer.from([0x41, 0x47, 0x44, 0x32]);
  return buffer.subarray(0, 4).equals(signature);
}

How to validate .ft10 files in Go

Go
func IsFT10(data []byte) bool {
    signature := []byte{0x41, 0x47, 0x44, 0x32}
    if len(data) < 4 {
        return false
    }
    return bytes.Equal(data[:4], signature)
}

API Endpoint

GET /api/v1/ft10
curl https://filesignature.org/api/v1/ft10

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .ft10 file?

A .ft10 file is a FT10 file.

What are the magic bytes for .ft10 files?

The magic bytes for FT10 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 .ft10 file?

To validate a .ft10 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 .ft10 files?

The primary MIME type for .ft10 files is image/x-freehand.

Is it safe to open .ft10 files?

FT10 (.ft10) 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.