You’ve got 200 SKUs to label and a single-barcode generator that makes you click “generate,” “download,” “rename,” repeat — 200 times. That’s not a workflow, that’s an afternoon you’ll never get back.

Bulk barcode generation solves this by letting you upload a list of product codes once and get every barcode back in one batch. Here’s how to actually do it.

Step-by-Step: Bulk Generating Barcodes

1. Prepare your product list.
Open a spreadsheet with one column for your product codes (SKU, UPC, or whatever identifier you use) and, ideally, a second column for product names. Keep it clean — no merged cells, no blank rows in the middle.

2. Pick your barcode format.
Most inventory setups use UPC-A or Code 128. If you’re not sure which, check what your POS system or marketplace (Amazon, Shopify, etc.) requires — using the wrong format means your labels won’t scan at checkout even though they look fine.

3. Upload the list to the Bulk Barcode Generator.
Go to the Bulk Barcode Generator, upload your CSV or spreadsheet, and map the columns (which column is the code, which is the label text). This mapping step is where most errors happen — double-check it before generating.

4. Generate and review before downloading everything.
Spot-check 5-10 barcodes from the batch by scanning them with your phone. It’s much faster to catch a formatting issue now than after printing 200 labels.

5. Download in the right layout.
Choose a format matching your label sheets or printer — sheet labels (like Avery templates) if you’re hand-applying, or a continuous roll format if you’re using a thermal label printer.

6. Print and apply.
Do a small test batch first if you’re printing at scale. Ink smudging or label size mismatches are easier to fix on 10 labels than 500.

Want to generate your own barcode? Visit our Barcode Generator to create a barcode quickly and easily for products, inventory, and other uses.

Practical Tips & Troubleshooting

• Some codes failed to generate? This is almost always a formatting issue — UPC codes need exactly 12 digits, EAN needs 13. A code with a letter mixed in, or one digit short, will get skipped. Check your source spreadsheet for stray spaces or text formatting that added leading zeros incorrectly.
• Duplicate codes in your list? Bulk tools generally won’t catch this for you — sort your spreadsheet and check for duplicates before uploading, especially if you’re merging lists from multiple sources.
• Barcodes print too small to scan reliably? This is a printer/label size issue, not a generation issue. Barcodes shrunk below a certain width lose scan reliability, particularly with cheaper thermal printers. Check your label template’s minimum size recommendation.
• Need to add new products later? Keep your original spreadsheet as your master list. When you add products, append rows and re-run just the new entries rather than regenerating the whole batch — saves time and avoids reprinting everything.
• Mixing product types (some need UPC, some need Code 128)? Split them into separate uploads by format. Mixing formats in one batch usually isn’t supported and can cause mapping errors.

Real Use Case

A small warehouse operator managing a few hundred SKUs told us their old process was generating barcodes one at a time in a free online tool, screenshotting each one, and pasting them into a Word doc to print. Switching to a bulk upload cut a two-day labeling job down to about twenty minutes, most of which was just printing and applying labels.

Wrap-Up

If you’re labeling more than a handful of products, one-by-one barcode generation just isn’t sustainable. A bulk upload turns hours of repetitive clicking into a single batch job. Try the Bulk Barcode Generator next time you’ve got a spreadsheet of products that need labeling.

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