OTP
application/vnd.oasis.opendocument.presentation-template
Magic Bytes
Offset: 0
50 4B
OpenDocument Presentation Template (OTP) is an XML-based file format for presentation templates maintained by the Organization for the Advancement of Structured Information Standards (OASIS). It serves as a blueprint for creating slide shows, primarily used by productivity suites like LibreOffice Impress and Apache OpenOffice to maintain consistent formatting and styles. As a ZIP-compressed container, the format is generally considered safe but may include macros that require validation by the host application to prevent potential security vulnerabilities.
Validation Code
How to validate .otp files in Python
def is_otp(file_path: str) -> bool:
"""Check if file is a valid OTP by magic bytes."""
signature = bytes([0x50, 0x4B])
with open(file_path, "rb") as f:
return f.read(2) == signatureHow to validate .otp files in Node.js
function isOTP(buffer: Buffer): boolean {
const signature = Buffer.from([0x50, 0x4B]);
return buffer.subarray(0, 2).equals(signature);
}How to validate .otp files in Go
func IsOTP(data []byte) bool {
signature := []byte{0x50, 0x4B}
if len(data) < 2 {
return false
}
return bytes.Equal(data[:2], signature)
}API Endpoint
/api/v1/otp
curl https://filesignature.org/api/v1/otp
Related Formats
Frequently Asked Questions
What is a .otp file?
A .otp file is a OTP file. OpenDocument Presentation Template (OTP) is an XML-based file format for presentation templates maintained by the Organization for the Advancement of Structured Information Standards (OASIS). It serves as a blueprint for creating slide shows, primarily used by productivity suites like LibreOffice Impress and Apache OpenOffice to maintain consistent formatting and styles. As a ZIP-compressed container, the format is generally considered safe but may include macros that require validation by the host application to prevent potential security vulnerabilities.
What are the magic bytes for .otp files?
The magic bytes for OTP files are 50 4B at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .otp file?
To validate a .otp file, read the first bytes of the file and compare them against the known magic bytes (50 4B) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .otp files?
The primary MIME type for .otp files is application/vnd.oasis.opendocument.presentation-template.
Is it safe to open .otp files?
OTP (.otp) 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.