Generate Bulk QR Code PNGs from URLs with API in n8n

Generate QR code PNGs in bulk from URLs (with an API call) — all inside n8n

This on-demand n8n automation takes a list of URLs (or text strings), calls the Bulk QR Generator public API for each item, and saves a separate QR code PNG file to disk—perfect for bulk QR creation without manual work.

What this workflow does

• Runs on demand: execute the workflow manually in n8n to generate your QR codes whenever you need them.
• Builds a list of items: you provide a set of entries (each with a name and URL/text content), and the workflow constructs a Bulk QR Generator API request per item.
• Processes one item at a time: it handles the list sequentially to help stay within API rate limits.
• Calls the API and retrieves PNGs: for each item it requests https://bulkqrgenerator.net/api/v1/qr and downloads the returned QR code as a PNG image.
• Saves images to disk: each file is written as qr-<name>.png, then the workflow continues until all items are processed.

Use cases

• Create QR codes for a SaaS marketing campaign from a list of landing page URLs.
• Generate scannable product/asset QR codes in bulk for inventory, packaging, or documentation references.
• Turn event link lists into a batch of QR images for posters, tickets, or signage.

Technical details

• Manual Trigger to run whenever you choose.
• Code node to build the item list and prepare API request URLs.
• Split in Batches behavior (one item at a time) to manage rate limits.
• HTTP Request node to call the Bulk QR Generator API and fetch each QR PNG.
• File saving step: ensure your n8n instance has permission to write to the filesystem path (or replace with Google Drive/Dropbox/Email if needed).
• You can adjust QR parameters in the API URL (e.g., size, margin, format).