Adding QR codes on invoices is currently unavailable in QuickBooks Online. You may want to look for a third-party application to integrate with QuickBooks that supports this feature.
You can visit our QuickBooks App Center to check for an application that can help you add QR code to your invoice.
Here's how to do it:
For additional information on how to personalise add specific info to your sales forms, please check out this article: Customise invoices, estimates, and sales receipts in QuickBooks Online.
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