A small SaaS that auto-creates QR codes for Shopify products
printqr is a small SaaS that automatically creates and attaches a QR code whenever a new product is added in Shopify. Most free QR code tools are built for one manual click at a time, which becomes a chore when a store has a full product catalog. After installation, the service uses a webhook to notice new Shopify products and generate the QR code without a manual step.
For catalogs outside Shopify, it also offers an API with a bulk endpoint that can handle up to 500 items per call. The service runs on , uses a Durable Object to track , and uses Stripe for billing. A major build issue was that the usual qrcode package needed canvas to make PNG files, but canvas is not available in the Workers runtime, so a custom PNG encoder was built and checked byte by byte against another decoder.
Pricing is free for 100 renders per month, $9 per month for 5,000 renders plus the bulk endpoint, and $19 per month for Shopify with unlimited webhook-triggered renders. The product is live with real Stripe , Shopify account connection, and legal pages, but outside customer revenue is still $0.
Key points
- New Shopify products get QR codes automatically after installation.
- The API can process up to 500 catalog items in one bulk endpoint call.
- Pricing starts with 100 free renders per month, then $9 and $19 monthly plans.
- could not use the usual canvas-based PNG output, so a custom PNG encoder was built.
- The product is live with payment, Shopify connection, and legal pages, but revenue is still $0.