QRCode

When To Use#

Used when the link needs to be converted into a QR Code.

Import Module#

import { NzQRCodeModule } from 'ng-zorro-antd/qr-code';

Examples

Basic

The simplest usage.

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QR code expired

Scanned

Other Status

The status can be controlled by the value nzStatus, four values of active, expired, loading, scanned are provided.

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Custom Color

Customize QR code color.

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Error Level

Set Error Level.

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With Icon

QRCode with icon.

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With padding

Customize the padding of the QR Code.

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With custom background color

Customize the background color of the QR Code.

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Download QRCode

A way to download QRCode.

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API#

nz-qrcodecomponentstandalone#

Property	Description	Type	Default
`[nzValue]`	scanned link	`string`	-
`[nzColor]`	QR code Color	`string`	`#000`
`[nzBgColor]`	QR code background color	`string`	`#FFFFFF`
`[nzSize]`	QR code Size	`number`	`160`
`[nzPadding]`	QR code Padding	`number \| number[]`	`0`
`[nzIcon]`	Icon address in QR code	`string`	-
`[nzIconSize]`	The size of the icon in the QR code	`number`	`40`
`[nzBordered]`	Whether has border style	`boolean`	`true`
`[nzStatus]`	QR code status	`'active'｜'expired' ｜'loading'`	`active`
`[nzLevel]`	Error Code Level	`'L'｜'M'｜'Q'｜'H'`	`M`
`(nzRefresh)`	callback	`EventEmitter<string>`	-

Note#

Invalid QR Code#

nzValue has a conservative upper limit of 738 or fewer strings. If error correction levels are used, the nzValue upper limit will be lowered.

QR Code error correction level#

The ErrorLevel means that the QR code can be scanned normally after being blocked, and the maximum area that can be blocked is the error correction rate.

Generally, the QR code is divided into 4 error correction levels: Level L can correct about 7% errors, Level M can correct about 15% errors, Level Q can correct about 25% errors, and Level H can correct about 30% errors. When the content encoding of the QR code carries less information, in other words, when the value link is short, set different error correction levels, and the generated image will not change.

For more information, see the: https://www.qrcode.com/en/about/error_correction