DJV (.djv)
.djv file signature | image/vnd.djvu
DjVu is a digital document format developed by AT&T Labs for high-compression scanned documents and maintained through the open-source DjVuLibre project. It is used for storing books, magazines, technical papers, and other image-heavy documents, and it is supported by various document viewers and browser plugins. The format is generally safe to open, though older deployments and third-party viewers may be considered legacy in favor of more widely supported formats.
Magic Bytes
Offset 0
41 54 26 54 46 4F 52 4D
Sources: Apache Tika, Wikipedia
All Known Signatures
2 signature variants are documented for .djv files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| 41 54 26 54 46 4F 52 4D | 0 | Apache Tika, Wikipedia |
| 44 4A 56 | 0 | Wikipedia |
Extension
.djv
MIME Type
image/vnd.djvu
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .djv files in Python
def is_djv(file_path: str) -> bool:
"""Check if file is a valid DJV by magic bytes."""
signature = bytes([0x41, 0x54, 0x26, 0x54, 0x46, 0x4F, 0x52, 0x4D])
with open(file_path, "rb") as f:
return f.read(8) == signatureHow to validate .djv files in Node.js
function isDJV(buffer: Buffer): boolean {
const signature = Buffer.from([0x41, 0x54, 0x26, 0x54, 0x46, 0x4F, 0x52, 0x4D]);
return buffer.subarray(0, 8).equals(signature);
}How to validate .djv files in Go
func IsDJV(data []byte) bool {
signature := []byte{0x41, 0x54, 0x26, 0x54, 0x46, 0x4F, 0x52, 0x4D}
if len(data) < 8 {
return false
}
return bytes.Equal(data[:8], signature)
}API Endpoint
/api/v1/djv
curl https://filesignature.org/api/v1/djv
See the full API documentation for all endpoints and parameters.
Related Formats
Frequently Asked Questions
What is a .djv file?
A .djv file is identified by the magic bytes 41 54 26 54 46 4F 52 4D at byte offset 0. DjVu is a digital document format developed by AT&T Labs for high-compression scanned documents and maintained through the open-source DjVuLibre project. It is used for storing books, magazines, technical papers, and other image-heavy documents, and it is supported by various document viewers and browser plugins. The format is generally safe to open, though older deployments and third-party viewers may be considered legacy in favor of more widely supported formats.
What are the magic bytes for .djv files?
The magic bytes for DJV files are 41 54 26 54 46 4F 52 4D at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .djv file?
To validate a .djv file, read the first bytes of the file and compare them against the known magic bytes (41 54 26 54 46 4F 52 4D) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .djv files?
The primary MIME type for .djv files is image/vnd.djvu.
Is it safe to open .djv files?
DJV (.djv) 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.