OpenDocument text document (.odt)
.odt file signature | application/vnd.oasis.opendocument.text
OpenDocument text document, presentation, and text document template, respectively.
Magic Bytes
Offset 0
50 4B
Sources: Apache Tika
All Known Signatures
4 signature variants are documented for .odt files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| 50 4B | 0 | Apache Tika |
| 50 4B 03 04 50 4B 05 06 50 4B 07 08 | 0 | Wikipedia |
| 50 4B 03 04 | 0 | Gary Kessler |
| 6D 69 6D 65 74 79 70 65 61 70 70 6C 69 63 61 74 69 6F 6E 2F 76 6E 64 2E 6F 61 73 69 73 2E 6F 70 65 6E 64 6F 63 75 6D 65 6E 74 2E 74 65 78 74 | 0 | Neil Harvey FileSignatures |
Extension
.odt
MIME Type
application/vnd.oasis.opendocument.text
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .odt files in Python
def is_odt(file_path: str) -> bool:
"""Check if file is a valid ODT by magic bytes."""
signature = bytes([0x50, 0x4B])
with open(file_path, "rb") as f:
return f.read(2) == signatureHow to validate .odt files in Node.js
function isODT(buffer: Buffer): boolean {
const signature = Buffer.from([0x50, 0x4B]);
return buffer.subarray(0, 2).equals(signature);
}How to validate .odt files in Go
func IsODT(data []byte) bool {
signature := []byte{0x50, 0x4B}
if len(data) < 2 {
return false
}
return bytes.Equal(data[:2], signature)
}API Endpoint
/api/v1/odt
curl https://filesignature.org/api/v1/odt
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .odt file?
A .odt file is a OpenDocument text document file. OpenDocument text document, presentation, and text document template, respectively.
What are the magic bytes for .odt files?
The magic bytes for OpenDocument text document 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 .odt file?
To validate a .odt 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 .odt files?
The primary MIME type for .odt files is application/vnd.oasis.opendocument.text.
Is it safe to open .odt files?
OpenDocument text document (.odt) 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.