Harvard Graphics DOS Ver (.shw)
.shw file signature | application/octet-stream
Harvard Graphics DOS Ver. 2/x Presentation file
Magic Bytes
Offset 0
52 49 46 46 73 68 77 34
Sources: Wikipedia
All Known Signatures
3 signature variants are documented for .shw files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| 52 49 46 46 73 68 77 34 | 0 | Wikipedia |
| 52 49 46 46 73 68 77 35 | 0 | Wikipedia |
| 53 48 4F 57 | 0 | Gary Kessler |
Extension
.shw
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .shw files in Python
def is_shw(file_path: str) -> bool:
"""Check if file is a valid SHW by magic bytes."""
signature = bytes([0x52, 0x49, 0x46, 0x46, 0x73, 0x68, 0x77, 0x34])
with open(file_path, "rb") as f:
return f.read(8) == signatureHow to validate .shw files in Node.js
function isSHW(buffer: Buffer): boolean {
const signature = Buffer.from([0x52, 0x49, 0x46, 0x46, 0x73, 0x68, 0x77, 0x34]);
return buffer.subarray(0, 8).equals(signature);
}How to validate .shw files in Go
func IsSHW(data []byte) bool {
signature := []byte{0x52, 0x49, 0x46, 0x46, 0x73, 0x68, 0x77, 0x34}
if len(data) < 8 {
return false
}
return bytes.Equal(data[:8], signature)
}API Endpoint
/api/v1/shw
curl https://filesignature.org/api/v1/shw
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .shw file?
A .shw file is a Harvard Graphics DOS Ver file. Harvard Graphics DOS Ver. 2/x Presentation file
What are the magic bytes for .shw files?
The magic bytes for Harvard Graphics DOS Ver files are 52 49 46 46 73 68 77 34 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .shw file?
To validate a .shw file, read the first bytes of the file and compare them against the known magic bytes (52 49 46 46 73 68 77 34) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .shw files?
There is no officially registered MIME type for .shw files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .shw files?
Harvard Graphics DOS Ver (.shw) 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.