WB1 (.wb1)
.wb1 file signature | application/x-quattro-pro;version=1+5
WB1 is a spreadsheet file format used by Quattro Pro 1 through 5, originally developed by Borland and later maintained by Corel for compatibility in its spreadsheet software. It was used to store worksheets, formulas, and related spreadsheet data in business and personal computing environments. The format is legacy and largely obsolete, but older files may still be opened by modern office suites; as with other documents, untrusted files should be handled carefully.
Magic Bytes
Offset 0
00 00 02 00 01 10
Sources: Apache Tika
Extension
.wb1
MIME Type
application/x-quattro-pro;version=1+5
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .wb1 files in Python
def is_wb1(file_path: str) -> bool:
"""Check if file is a valid WB1 by magic bytes."""
signature = bytes([0x00, 0x00, 0x02, 0x00, 0x01, 0x10])
with open(file_path, "rb") as f:
return f.read(6) == signatureHow to validate .wb1 files in Node.js
function isWB1(buffer: Buffer): boolean {
const signature = Buffer.from([0x00, 0x00, 0x02, 0x00, 0x01, 0x10]);
return buffer.subarray(0, 6).equals(signature);
}How to validate .wb1 files in Go
func IsWB1(data []byte) bool {
signature := []byte{0x00, 0x00, 0x02, 0x00, 0x01, 0x10}
if len(data) < 6 {
return false
}
return bytes.Equal(data[:6], signature)
}API Endpoint
/api/v1/wb1
curl https://filesignature.org/api/v1/wb1
See the full API documentation for all endpoints and parameters.
Related Formats
Frequently Asked Questions
What is a .wb1 file?
A .wb1 file is identified by the magic bytes 00 00 02 00 01 10 at byte offset 0. WB1 is a spreadsheet file format used by Quattro Pro 1 through 5, originally developed by Borland and later maintained by Corel for compatibility in its spreadsheet software. It was used to store worksheets, formulas, and related spreadsheet data in business and personal computing environments. The format is legacy and largely obsolete, but older files may still be opened by modern office suites; as with other documents, untrusted files should be handled carefully.
What are the magic bytes for .wb1 files?
The magic bytes for WB1 files are 00 00 02 00 01 10 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .wb1 file?
To validate a .wb1 file, read the first bytes of the file and compare them against the known magic bytes (00 00 02 00 01 10) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .wb1 files?
The primary MIME type for .wb1 files is application/x-quattro-pro;version=1+5.
Is it safe to open .wb1 files?
WB1 (.wb1) 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.