Data
INI Configuration is a data format commonly identified by .ini, .conf, .cfg. Use the listed signatures, MIME types, and structure notes to validate files beyond the extension.
5B 73 61 6D 70 6C 65 5D [sample]SIGNATURE = bytes.fromhex("5b73616d706c655d")
OFFSET = 0
def is_ini(path: str) -> bool:
with open(path, "rb") as f:
f.seek(OFFSET)
head = f.read(len(SIGNATURE))
return head == SIGNATUREconst SIGNATURE = [0x5b, 0x73, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x5d];
const OFFSET = 0;
// bytes: a Uint8Array / Buffer holding the start of the file
export function isIni(bytes) {
return SIGNATURE.every((byte, i) => bytes[OFFSET + i] === byte);
}package fileid
import "bytes"
var isiniSignature = []byte{0x5b, 0x73, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x5d}
const isiniOffset = 0
func IsIni(b []byte) bool {
end := isiniOffset + len(isiniSignature)
if len(b) < end {
return false
}
return bytes.Equal(b[isiniOffset:end], isiniSignature)
}const SIGNATURE: &[u8] = &[0x5b, 0x73, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x5d];
const OFFSET: usize = 0;
fn is_ini(bytes: &[u8]) -> bool {
bytes.get(OFFSET..OFFSET + SIGNATURE.len()) == Some(SIGNATURE)
}<?php
$signature = "\x5b\x73\x61\x6d\x70\x6c\x65\x5d";
$offset = 0;
function is_ini(string $bytes): bool {
global $signature, $offset;
return substr($bytes, $offset, strlen($signature)) === $signature;
}INI Configuration is used for data exchange, imports, exports, parser testing, and validation workflows. Encoding, delimiters, versions, and container structure often change implementation behavior.
Untrusted input is not safe just because the format was detected. Account for parser exceptions, large files, unexpected encodings, and external references.
11 samples help test leading-byte detection, parser errors, upload limits, and download behavior.
Blue Sky INI is a INI Configuration sample based on Wikimedia Commons. It can be used to test downloads, parsers, previews, and file type detection.
01-blue-sky.ini5390986ec25e1dcc50005c53502b63a293c5b4bee6481ccda0aec4b9b27aa38fFlower Garden INI is a INI Configuration sample based on Wikimedia Commons. It can be used to test downloads, parsers, previews, and file type detection.
02-flower-garden.ini0d455776327b7f8c380abc20446c6aeb3174645ea4e0e9f1057ca7eb452f9c46Navy Blue Sky INI is a INI Configuration sample based on Wikimedia Commons. It can be used to test downloads, parsers, previews, and file type detection.
03-navy-blue-sky.ini753d1c06b41a2fc055122dd24d90a571b3ce03f54cb4370ff1fa9454e51d6492Nature of the Sky INI is a INI Configuration sample based on Wikimedia Commons. It can be used to test downloads, parsers, previews, and file type detection.
04-nature-sky.iniadcd4cc0325b644736310105256c77af44db4919fa9cea2c31e758c2620df943Sky Landscape INI is a INI Configuration sample based on Wikimedia Commons. It can be used to test downloads, parsers, previews, and file type detection.
05-sky-landscape.ini293916ec89df7044fc3316b739c64399c67118841b93531ce884335b009b8448Starry Sky INI is a INI Configuration sample based on Wikimedia Commons. It can be used to test downloads, parsers, previews, and file type detection.
06-starry-sky.inied8cf89e846fbbc88bc02f3b5097547826718feda363fffcd672f40f1f479f01Blue Night Sky INI is a INI Configuration sample based on Wikimedia Commons. It can be used to test downloads, parsers, previews, and file type detection.
07-blue-night-sky.ini8fca89858072b208f983603607f87302eadb5a167c115f78de17609bd3cb7f23Hibiscus Flower INI is a INI Configuration sample based on Wikimedia Commons. It can be used to test downloads, parsers, previews, and file type detection.
08-hibiscus-flower.inie5b555c7d83a19837d888e086c27e8acbffc7fbde1a3f5faabf8ac9e68749b1fArctic Sky INI is a INI Configuration sample based on Wikimedia Commons. It can be used to test downloads, parsers, previews, and file type detection.
09-arctic-sky.ini4351d21df768292f6dc8f010686d84120bfe015a7f9c436f7b14bb82e5f634c2Sunset Rays INI is a INI Configuration sample based on Wikimedia Commons. It can be used to test downloads, parsers, previews, and file type detection.
10-sunset-rays.ini36685bc27e8418c2dffe2e6ea5a9ece1c21efeb009ced7c28dbed22dd4bd590dNASA Blue Marble INI is a INI Configuration sample based on NASA Image and Video Library. It can be used to test downloads, parsers, previews, and file type detection.
nasa-blue-marble-2012-east.ini74de688d81b9ef2c50a3659225d5b16cdc1bdd0a954b5181a7e119bf9b58b957INI Configuration files begin with the byte signature 5B 73 61 6D 70 6C 65 5D ("[sample]"). Detect the format by reading these leading bytes rather than trusting the file extension alone.
The MIME type for INI Configuration is text/plain.
INI Configuration files use the .ini, .conf, .cfg extension. The extension is a convention only and does not guarantee the file contents, so combine it with signature and structure checks.