3D
VRM Avatar is a 3d format commonly identified by .vrm. Use the listed signatures, MIME types, and structure notes to validate files beyond the extension.
67 6C 54 46 glTFSIGNATURE = bytes.fromhex("676c5446")
OFFSET = 0
def is_vrm(path: str) -> bool:
with open(path, "rb") as f:
f.seek(OFFSET)
head = f.read(len(SIGNATURE))
return head == SIGNATUREconst SIGNATURE = [0x67, 0x6c, 0x54, 0x46];
const OFFSET = 0;
// bytes: a Uint8Array / Buffer holding the start of the file
export function isVrm(bytes) {
return SIGNATURE.every((byte, i) => bytes[OFFSET + i] === byte);
}package fileid
import "bytes"
var isvrmSignature = []byte{0x67, 0x6c, 0x54, 0x46}
const isvrmOffset = 0
func IsVrm(b []byte) bool {
end := isvrmOffset + len(isvrmSignature)
if len(b) < end {
return false
}
return bytes.Equal(b[isvrmOffset:end], isvrmSignature)
}const SIGNATURE: &[u8] = &[0x67, 0x6c, 0x54, 0x46];
const OFFSET: usize = 0;
fn is_vrm(bytes: &[u8]) -> bool {
bytes.get(OFFSET..OFFSET + SIGNATURE.len()) == Some(SIGNATURE)
}<?php
$signature = "\x67\x6c\x54\x46";
$offset = 0;
function is_vrm(string $bytes): bool {
global $signature, $offset;
return substr($bytes, $offset, strlen($signature)) === $signature;
}VRM Avatar is used in 3D viewers, asset pipelines, model conversion, avatar loading, and scene validation. Containers, extensions, binary chunks, and texture references all affect implementation behavior.
Untrusted input is not safe just because the format was detected. Account for parser exceptions, large files, unexpected encodings, and external references.
9 samples help test viewer loading, extension detection, and load time across file sizes.
Sendagaya Shibu VRM is a VRM Avatar sample based on VRoid Help. It can be used to test downloads, parsers, previews, and file type detection.
01-sendagaya-shibu.vrmb7bcad5e5890abc4d7c65f9afc31da2445db03197d44f1ec10447f9db5abeaffVivi VRM is a VRM Avatar sample based on VRoid Help. It can be used to test downloads, parsers, previews, and file type detection.
02-vivi.vrmeaf902e041a7a810f1423599ae75682f61184ab6ef0206da9a8ed9caa8ec3a9dVita VRM is a VRM Avatar sample based on VRoid Help. It can be used to test downloads, parsers, previews, and file type detection.
03-vita.vrmf2bf78f28a24e2f75f5ca0b6c3b646654c394e4b03592dfaa0d0633ef0972b4dVictoria Rubin VRM is a VRM Avatar sample based on VRoid Help. It can be used to test downloads, parsers, previews, and file type detection.
04-victoria-rubin.vrmb1372131bdbf233f46320146d565f342a7e4f6f4b8f2aefb301f1a283ec07e1eSakurada Fumiriya VRM is a VRM Avatar sample based on VRoid Help. It can be used to test downloads, parsers, previews, and file type detection.
05-sakurada-fumiriya.vrmd8fb05f33e377df028cb6b9d58c441ce68326c41fa23f6c735d40c65ae3dc710Sendagaya Shino VRM is a VRM Avatar sample based on VRoid Help. It can be used to test downloads, parsers, previews, and file type detection.
06-sendagaya-shino.vrm1e177c1a7b14f783a9c48395831db8616260d3bddd4154cb2784b779adca49b5HairSample Female VRM is a VRM Avatar sample based on VRoid Help. It can be used to test downloads, parsers, previews, and file type detection.
07-hair-sample-female.vrmadfd242317aaabc773f31f7fff7b013979fbb5baa47e97427a78913d9cb4e979HairSample Male VRM is a VRM Avatar sample based on VRoid Help. It can be used to test downloads, parsers, previews, and file type detection.
08-hair-sample-male.vrm7aeca142dabbc26ba0f5b9c998c8f3cb6df341287d67788427ac837223785a3f100Avatars Devil VRM is a VRM Avatar sample based on Open Source Avatars. It can be used to test downloads, parsers, previews, and file type detection.
100avatars-devil.vrm2e428dd1846504a77f3936259f489a899cc92aa6179b769a1aee230f875a9b4dVRM Avatar files begin with the byte signature 67 6C 54 46 ("glTF"). Detect the format by reading these leading bytes rather than trusting the file extension alone.
The MIME type for VRM Avatar is model/vrm, model/gltf-binary.
VRM Avatar files use the .vrm extension. The extension is a convention only and does not guarantee the file contents, so combine it with signature and structure checks.