UPCgen

UPCgen is basically the chillest barcode generator on the planet right now. No cap. You know how every other barcode tool out there feels like it was designed by someone who hates fun? Yeah, we fixed that. UPCgen is a dead-simple, web-based tool that lets you generate valid, GS1-standard barcodes in seconds flat. We're talking UPC, EAN, ISBN, GTIN, ITF-14, Code 128, FNSKU, and even Data Matrix codes for the pharma heads out there. Whether you're an Amazon FBA seller trying to slap FNSKU labels on your inventory, a Shopify or Etsy seller who needs GTINs to stop getting listing errors, or a warehouse manager labeling outer cases with ITF-14, this thing has you covered.

We built UPCgen because the existing options are straight-up garbage. Either you get bloated software that takes forever to install, or you land on some sketchy site that promises "free" UPCs but actually gives you numbers that collide with real registered products, getting your listings suspended. That's a hard pass. We wanted one clean page that generates a valid code, downloads cleanly as PNG, SVG, PDF, or EPS, and is totally honest about when you need a real GS1 number versus when you can just use our generated codes. It's anonymous if you just need one code every 24 hours, or you can register for free to get five codes daily. Need more? Subscribe. It's that simple. No checkbox soup, no confusing menus, just a barcode generator that actually works.

Valid Check Digits and GS1 Validation

Every single barcode you generate with UPCgen has a valid check digit that passes GS1 standard validation. We're not out here playing games with your inventory. The math is done server-side, so you never have to worry about scanning failures at the register or in the warehouse. This means your codes will work on Amazon, Shopify, Etsy, eBay, and Walmart supplier portals without any drama. It's legit, and we make sure of it before you even hit download.

Bulk Generation and Export Options

Need one barcode? Cool, generate one. Need ten thousand for a massive product launch? Also cool, we got you. UPCgen lets you generate anywhere from 1 to 10,000 codes at once. And you can export them in whatever format your workflow needs: CSV for spreadsheets, PNG sheets for easy printing, PDF for professional documents, SVG for vector editing, or EPS for high-res print production. It's built for both the solo seller and the warehouse crew running a 3PL operation.

Platform-Specific Compatibility

We didn't just make a generic barcode generator and call it a day. UPCgen is specifically designed to meet the requirements of major e-commerce platforms. Amazon FBA sellers can generate FNSKU codes that are ready to print. Shopify and Etsy sellers can get GTIN-compliant UPCs and EANs. Self-publishers on Amazon KDP can generate ISBN barcodes that match their book specs. We even have step-by-step guides for each platform so you don't have to guess. It's all about making your life easier, not harder.

Anonymous and Registered Tiers

We respect your privacy, fam. You can generate one barcode every 24 hours completely anonymously with no sign-up required. That's perfect for testing or if you only need a code once in a while. If you need more, registration is free and bumps you up to five codes every 24 hours. And if you're a power user or a business that needs hundreds or thousands of codes daily, you can subscribe to a plan that fits your volume. No hidden fees, no bait-and-switch, just honest tiers.

Amazon FBA Sellers Printing FNSKU Labels

If you're selling on Amazon FBA, you know the struggle of getting your inventory labeled correctly. UPCgen is a lifesaver for generating FNSKU barcodes that Amazon will actually accept. No more worrying about barcode collisions or invalid codes that get your shipments rejected at the warehouse. Just generate, download as a PDF sheet, and print. You can even do bulk generation for entire product lines, making your prep process way faster. It's the tool every FBA seller needs in their arsenal.

Shopify and Etsy Sellers Adding GTINs to Listings

Getting your products listed on Shopify or Etsy can be a nightmare if you don't have valid GTINs. UPCgen lets you generate UPC-A or EAN-13 codes that are platform-approved. This means your listings won't get flagged or suppressed for missing barcode information. You can generate the exact barcode type your marketplace requires, download it as a high-res PNG, and upload it directly to your product pages. It's fast, it's easy, and it keeps your store running smooth.

Warehouses and 3PLs Labeling Outer Cases with ITF-14

Warehouse operations are all about efficiency, and nothing slows things down like bad barcodes. UPCgen supports ITF-14 barcodes, which are specifically designed for outer case labeling in logistics. These codes scan reliably even when printed on corrugated cardboard, and they integrate perfectly with your warehouse management system. You can generate them in bulk, export to CSV or PDF, and have your team printing labels in minutes. It's a game-changer for any 3PL or fulfillment center.

Self-Publishers Generating ISBN Barcodes for KDP

If you're a self-published author on Amazon KDP, you need an ISBN barcode for your book cover. UPCgen makes this stupidly simple. Just input your ISBN, select the barcode type, and generate a clean, high-resolution barcode that's ready for your cover design. You can download it as SVG or EPS for professional printing, ensuring your book looks legit on the shelf. No more paying a graphic designer to create a barcode or messing around with complex software. Just generate and go.

What barcode types can I generate with UPCgen?

You can generate a wide range of barcode types including UPC-A, UPC-E, EAN-13, EAN-8, ISBN, ITF-14, Code 128, FNSKU, and Data Matrix. Each one is generated with a valid check digit and passes GS1 standard validation. Whether you need a simple retail barcode or a complex 2D Data Matrix code for pharma compliance, we have you covered. The interface lets you switch between types instantly, so you're never stuck.

Are the barcodes generated by UPCgen valid for use on Amazon and other platforms?

Yes, absolutely. UPCgen codes are designed to meet the requirements of major platforms like Amazon, Shopify, Etsy, eBay, and Walmart supplier portals. Every code has a valid check digit and passes GS1 validation. However, please note that if you need a globally unique UPC number for retail distribution, you should purchase a real GS1 prefix. Our codes are perfect for internal use, FNSKU labels, and most e-commerce listings where a unique identifier is needed.

Do I need to create an account to use UPCgen?

Nope, not at all. You can generate one barcode every 24 hours completely anonymously with no sign-up required. If you need more, you can register for free to get five codes every 24 hours. For heavy users, we have subscription plans that offer higher daily limits and additional features like bulk export and API access. But if you just need a single code, you can be in and out in under a minute without giving us any personal info.

Can I generate barcodes in bulk and export them?

Yes, you can generate anywhere from 1 to 10,000 barcodes at once. UPCgen supports multiple export formats including CSV for spreadsheets, PNG sheets for printing, PDF for professional documents, SVG for vector editing, and EPS for high-res print production. This makes it perfect for product launches, warehouse labeling, or any scenario where you need a large batch of codes ready to go. The bulk generation process is fast and straightforward.