PBT (.pbt)
.pbt file signature | application/octet-stream
PBT is a proprietary file format created and maintained by the application that generates it, typically as part of a specific software workflow. It is used to store project data, structured records, or application-specific resources for later loading, editing, or exchange within the same software environment. The format is generally considered safe, but compatibility is limited to software that understands it, and older PBT files may not open correctly in newer versions.
Magic Bytes
Offset 0
78 56 34
Sources: Wikipedia
Extension
.pbt
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .pbt files in Python
def is_pbt(file_path: str) -> bool:
"""Check if file is a valid PBT by magic bytes."""
signature = bytes([0x78, 0x56, 0x34])
with open(file_path, "rb") as f:
return f.read(3) == signatureHow to validate .pbt files in Node.js
function isPBT(buffer: Buffer): boolean {
const signature = Buffer.from([0x78, 0x56, 0x34]);
return buffer.subarray(0, 3).equals(signature);
}How to validate .pbt files in Go
func IsPBT(data []byte) bool {
signature := []byte{0x78, 0x56, 0x34}
if len(data) < 3 {
return false
}
return bytes.Equal(data[:3], signature)
}API Endpoint
/api/v1/pbt
curl https://filesignature.org/api/v1/pbt
See the full API documentation for all endpoints and parameters.
Related Formats
Frequently Asked Questions
What is a .pbt file?
A .pbt file is identified by the magic bytes 78 56 34 at byte offset 0. PBT is a proprietary file format created and maintained by the application that generates it, typically as part of a specific software workflow. It is used to store project data, structured records, or application-specific resources for later loading, editing, or exchange within the same software environment. The format is generally considered safe, but compatibility is limited to software that understands it, and older PBT files may not open correctly in newer versions.
What are the magic bytes for .pbt files?
The magic bytes for PBT files are 78 56 34 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .pbt file?
To validate a .pbt file, read the first bytes of the file and compare them against the known magic bytes (78 56 34) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .pbt files?
There is no officially registered MIME type for .pbt files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .pbt files?
PBT (.pbt) 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.