H4 (.h4)
.h4 file signature | application/octet-stream
Data stored in version 4 of theHierarchical Data Format.
Magic Bytes
Offset 0
0E 03 13 01
Sources: Wikipedia
Extension
.h4
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .h4 files in Python
def is_h4(file_path: str) -> bool:
"""Check if file is a valid H4 by magic bytes."""
signature = bytes([0x0E, 0x03, 0x13, 0x01])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .h4 files in Node.js
function isH4(buffer: Buffer): boolean {
const signature = Buffer.from([0x0E, 0x03, 0x13, 0x01]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .h4 files in Go
func IsH4(data []byte) bool {
signature := []byte{0x0E, 0x03, 0x13, 0x01}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/h4
curl https://filesignature.org/api/v1/h4
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .h4 file?
A .h4 file is a H4 file. Data stored in version 4 of theHierarchical Data Format.
What are the magic bytes for .h4 files?
The magic bytes for H4 files are 0E 03 13 01 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .h4 file?
To validate a .h4 file, read the first bytes of the file and compare them against the known magic bytes (0E 03 13 01) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .h4 files?
There is no officially registered MIME type for .h4 files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .h4 files?
H4 (.h4) 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.