QR Code and Barcode APIs: Generation, Wi-Fi Access, and Image Decoding QR codes and barcodes are small integration points that often sit inside larger business workflows. A product may need to generate a payment code, print a logistics label, add Wi-Fi access to onboarding material, or decode QR code images submitted by users. GuGuData provides APIs for QR code generation, Wi-Fi QR code generation, general barcode generation, and QR code image decoding. This guide explains how these endpoints fit into practical product workflows. API lineup The public OpenAPI JSON is available at https://gugudata.io/assets/openapi/gugudata.openapi.3.1.json . When to use these APIs Generate QR codes for URLs, internal identifiers, invitation links, or operational handoff flows. Create Wi-Fi QR codes for offices, hotels, events, or onboarding screens. Generate barcodes for product labels, warehouse workflows, or printed forms. Decode QR code images uploaded by users or extracted from documents.…