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XHTML2 (.xhtml2)

.xhtml2 file signature | application/xhtml+xml

Safe

Magic Bytes

Offset 0
3C 68 74 6D 6C 20 78 6D 6C 6E 73 3D

Sources: Apache Tika

Extension

.xhtml2

MIME Type

application/xhtml+xml

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .xhtml2 files in Python

Python 
def is_xhtml2(file_path: str) -> bool:
    """Check if file is a valid XHTML2 by magic bytes."""
    signature = bytes([0x3C, 0x68, 0x74, 0x6D, 0x6C, 0x20, 0x78, 0x6D, 0x6C, 0x6E, 0x73, 0x3D])
    with open(file_path, "rb") as f:
        return f.read(12) == signature

How to validate .xhtml2 files in Node.js

Node.js 
function isXHTML2(buffer: Buffer): boolean {
  const signature = Buffer.from([0x3C, 0x68, 0x74, 0x6D, 0x6C, 0x20, 0x78, 0x6D, 0x6C, 0x6E, 0x73, 0x3D]);
  return buffer.subarray(0, 12).equals(signature);
}

How to validate .xhtml2 files in Go

Go 
func IsXHTML2(data []byte) bool {
    signature := []byte{0x3C, 0x68, 0x74, 0x6D, 0x6C, 0x20, 0x78, 0x6D, 0x6C, 0x6E, 0x73, 0x3D}
    if len(data) < 12 {
        return false
    }
    return bytes.Equal(data[:12], signature)
}

API Endpoint

GET /api/v1/xhtml2
curl https://filesignature.org/api/v1/xhtml2

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .xhtml2 file?

A .xhtml2 file is a XHTML2 file.

What are the magic bytes for .xhtml2 files?

The magic bytes for XHTML2 files are 3C 68 74 6D 6C 20 78 6D 6C 6E 73 3D at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .xhtml2 file?

To validate a .xhtml2 file, read the first bytes of the file and compare them against the known magic bytes (3C 68 74 6D 6C 20 78 6D 6C 6E 73 3D) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .xhtml2 files?

The primary MIME type for .xhtml2 files is application/xhtml+xml.

Is it safe to open .xhtml2 files?

XHTML2 (.xhtml2) 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.