Firebird and Interbase database files (.fdb)
.fdb file signature | application/octet-stream
Firebird and Interbase database files, respectively. SeeIBPhoenixfor more information.
Magic Bytes
Offset 0
01 00 39 30
Sources: Gary Kessler
All Known Signatures
2 signature variants are documented for .fdb files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| 01 00 39 30 | 0 | Gary Kessler |
| 46 44 42 48 00 | 0 | Gary Kessler |
Extension
.fdb
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .fdb files in Python
def is_fdb(file_path: str) -> bool:
"""Check if file is a valid FDB by magic bytes."""
signature = bytes([0x01, 0x00, 0x39, 0x30])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .fdb files in Node.js
function isFDB(buffer: Buffer): boolean {
const signature = Buffer.from([0x01, 0x00, 0x39, 0x30]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .fdb files in Go
func IsFDB(data []byte) bool {
signature := []byte{0x01, 0x00, 0x39, 0x30}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/fdb
curl https://filesignature.org/api/v1/fdb
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .fdb file?
A .fdb file is a Firebird and Interbase database files file. Firebird and Interbase database files, respectively. SeeIBPhoenixfor more information.
What are the magic bytes for .fdb files?
The magic bytes for Firebird and Interbase database files files are 01 00 39 30 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .fdb file?
To validate a .fdb file, read the first bytes of the file and compare them against the known magic bytes (01 00 39 30) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .fdb files?
There is no officially registered MIME type for .fdb files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .fdb files?
Firebird and Interbase database files (.fdb) 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.