hub3

PDF417 HUB3 2D barcode generator for browser and Node

MPT: SEPA → EURe payment rail on Gnosis Chain — payment intents API with sandbox, self-custody passkey wallet, Shopify app, EPC/HUB3/EIP-681 QR generator.

Bank transfer gateway for Craft Commerce with scannable payment codes: EPC QR (SEPA, GiroCode), HUB-3 PDF417, UPN QR, PAY by square, national payment references, one mark-paid API.

Validated HUB3 payment barcode (PDF417, slikaj i plati) for Croatian banks. SVG or PNG, no native modules

Spring Boot REST API for Billio. It generates HUB3 PDF417 payment barcodes for Croatian invoices, gets HNB exchange rates and authenticates with Supabase JWT.