Micro QR Code

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20 Sep 2026 - Nicola Asuni

Micro QR fits in one finder pattern instead of three, which takes the smallest symbol down to 11 modules square. Four versions, M1 to M4, and a ceiling of 35 digits: past that the data belongs in a full QR Code.

Type Token

Item	Value
Type token	`MICROQR`
Enum case	`BarcodeType::MICROQR`
Family	2D
Standard	ISO/IEC 18004
Class	`\Com\Tecnick\Barcode\Type\Square\MicroQrCode`

Input

Item	Value
Character set	numeric, alphanumeric and byte data
Length	up to 35 digits, 21 alphanumeric characters or 15 bytes at version M4
Check	Reed-Solomon error correction, computed by the library
Extra parameters	3 (see below)

Extra Parameters

Appended to the type token after commas, as in MICROQR,M,4,AN.

Position	Meaning	Values	Default
1	error correction level	`L`, `M`, `Q`	automatic
2	version	0 for automatic, or 1 to 4	0
3	encoding mode	`NM`, `AN`, `8B`	automatic

Examples

Ten digits in the smallest symbol that fits

<?php

require_once __DIR__ . '/vendor/autoload.php';

$barcode = new \Com\Tecnick\Barcode\Barcode();
$bobj = $barcode->getBarcodeObj(
    type: 'MICROQR',
    code: '0123456789',
    width: -4,
    height: -4,
    color: 'black',
    padding: [0, 0, 0, 0],
)->setBackgroundColor('white');

echo $bobj->getInlineSvgCode();

Micro QR Code barcode encoding 0123456789

Version M4 with alphanumeric encoding

$bobj = $barcode->getBarcodeObj(
    type: 'MICROQR,M,4,AN',
    code: 'ABCDEFGHIJKLMNOPQR',
    width: -4,
    height: -4,
    color: 'black',
    padding: [0, 0, 0, 0],
)->setBackgroundColor('white');

Micro QR Code barcode encoding ABCDEFGHIJKLMNOPQR

Errors

These payloads raise \Com\Tecnick\Barcode\Exception:

Payload	Message
``	Empty input
`0123456789012345678901234567890123456789`	MICROQR: The data does not fit in a Micro QR Code symbol