Bulk QR Code Generator

Some jobs need hundreds of QR codes that differ only in their content: a label for every product in a catalog, a code on every ticket for an event, an asset tag on every laptop in an office, a link to each table's order page in a restaurant. Making those one by one means typing, generating and saving the same way again and again, and mistakes creep in.

A bulk run turns the whole list into codes in one step. You paste the column, set the size and format once, and download a ZIP with every code numbered in the order of your list. Because each file follows the row it came from, matching code 37 to row 37 of the spreadsheet is straightforward when you lay out labels or merge them into a print template.

It also removes a whole class of errors. When codes are made by hand, it is easy to paste the same link twice or skip a row, and nobody notices until a customer scans the wrong label. Generating from the list itself means the codes are exactly as correct as the spreadsheet, so checking the list once checks every code.

The figures above are the limits of the largest QR code, version 40, at the lowest error correction level, as listed in DENSO WAVE's version tables. Real labels should stay far below them. The more data a code carries, the more modules it needs, and a dense code printed small is hard for phone cameras to read.

For bulk work that usually means short entries: a product number, a short link or an ID that your system looks up. Twenty or thirty characters per line give compact codes that scan well even on small stickers.

If your entries are long, such as full product page addresses with tracking parameters, consider shortening them with a redirect on your own site first. The codes become simpler, and you keep the option of changing where each one leads.

PNG is preset at 1000 pixels, which prints sharply at a few centimeters wide and works in office software, label tools and online print services. If a designer or print shop will place the codes in a layout program, ask whether they prefer SVG, PDF or EPS: those are vector formats that stay sharp at any size, from a price tag to a banner.

All codes in a batch share the same settings. Error correction M is a good default for indoor labels; choose Q or H for stickers that may be scratched or partly covered, which adds redundancy at the cost of a denser pattern. Dark modules on a light background and an intact white margin around each code matter more than any other setting.

Clean the list before pasting it. Remove the header row, empty lines and stray spaces at the end of cells, because every character becomes part of the code. If the entries are links, make sure each one starts with https:// so phones open it as a web page. Test two or three codes from the ZIP with a phone before sending the whole set to print.

The box accepts up to 100,000 characters per run. Your list is used only to draw the codes and is not kept. For a single code with a destination you can change later, see the Dynamic QR Code Generator; for Wi-Fi, contact cards and other types, use the QR Code Generator, and labels with a payment code are covered by the UPI QR Code Generator.