UPCgen

UPCgen is the simplest, most trusted barcode generator on the internet, purpose-built for sellers, warehouse operators, publishers, and developers who need a valid, downloadable barcode in seconds. Unlike bloated software suites or confusing tools that present an overwhelming array of checkboxes, UPCgen offers a clean, single-page interface where you select your barcode type, enter your number, and generate a GS1-validated code instantly. The platform supports a comprehensive range of symbologies including UPC-A, EAN-13, ISBN, EAN-8, UPC-E, ITF-14, Code 128, FNSKU, and Data Matrix. Its core value proposition is honesty and utility: UPCgen generates codes with valid check digits that pass GS1 standard validation, and it is transparent about when you need a real, registered GS1 number versus a generated code for internal use. The tool is designed for growth, offering anonymous generation for occasional users (1 code every 24 hours), free registered accounts for regular users (5 codes daily), and subscription plans for high-volume or professional needs. It also provides bulk generation capabilities for up to 10,000 codes at once, with exports to CSV, PNG sheets, PDF, SVG, or EPS. With dedicated generators for each barcode type and step-by-step guides for major platforms like Amazon, Shopify, Etsy, eBay, Walmart, and Amazon KDP, UPCgen evolves with your business from a single label to a full-scale operation.

GS1-Validated Barcode Generation

Every barcode generated by UPCgen undergoes rigorous GS1 standard validation to ensure the check digit is correct and the code is structurally valid. This means your barcodes are platform-approved for Amazon, Shopify, Etsy, eBay, and Walmart supplier portals. Whether you are printing a single FNSKU for an FBA shipment or generating thousands of ITF-14 codes for warehouse cases, you can trust that each code will scan correctly and meet the requirements of your supply chain partners. This validation layer eliminates the guesswork and potential for costly errors that come with manual check digit calculations or unreliable generators.

Bulk Generation and Multi-Format Export

UPCgen is built to scale with your business. You can generate anywhere from 1 to 10,000 barcodes in a single session, making it ideal for inventory onboarding, product launches, or warehouse relabeling projects. Once generated, you can export your barcodes in a variety of professional-grade formats including CSV for database integration, PNG sheets for easy printing, PDF for labeling, SVG for vector graphics, or EPS for high-resolution print production. This flexibility ensures that whether you are a solo Etsy seller or a 3PL managing thousands of SKUs, your output matches your workflow.

Anonymous and Tiered Access for Growth

UPCgen respects your privacy and your budget. You can generate one barcode every 24 hours completely anonymously, with no sign-up required. This is perfect for testing the tool or generating a single code for a new product. As your needs grow, you can register for a free account, which unlocks the ability to generate up to five codes every 24 hours. For power users, developers, and businesses with high-volume requirements, subscription plans provide unlimited generation, API access, and priority support. This tiered model lets you evolve your usage naturally, from occasional to professional, without any friction.

Platform-Specific Generators and Guides

UPCgen removes the guesswork from barcode selection with dedicated generators for each barcode type, including UPC-A, UPC-E, EAN-13, EAN-8, ISBN, ITF-14, Code 128, FNSKU, and Data Matrix. Each generator is pre-configured with the correct parameters for that symbology. Additionally, the platform offers step-by-step guides for adding barcodes to listings on Amazon, Shopify, Etsy, eBay, Walmart, and Amazon KDP. These guides walk you through the exact process for each platform, ensuring your barcodes are accepted and your products go live without delays. This combination of tool and education makes UPCgen a complete solution for ecommerce success.

Amazon FBA Sellers Printing FNSKU Labels

Amazon FBA sellers rely on UPCgen to generate FNSKU barcodes that are essential for labeling inventory destined for Amazon fulfillment centers. The tool ensures each FNSKU has a valid check digit and is formatted correctly for Amazon's scanning systems. Sellers can generate a single code for a new product or batch-generate hundreds for a large shipment, then export them as a PDF or PNG sheet for direct printing on label stock. This eliminates the need for expensive third-party software and provides a reliable, free solution for maintaining compliance with Amazon's labeling requirements.

Shopify and Etsy Sellers Adding GTINs to Listings

Shopify and Etsy sellers use UPCgen to generate GTINs (Global Trade Item Numbers) in the form of UPC-A or EAN-13 barcodes. These barcodes are required by both platforms for product listing optimization and to ensure products appear in search results and marketplaces. With UPCgen, sellers can quickly generate a valid barcode for each new product variant, download it as a high-resolution image, and upload it directly to their product pages. The platform's validation ensures the barcode will be accepted by the marketplace's system, reducing listing errors and speeding up time-to-market.

Warehouses and 3PLs Labeling Outer Cases with ITF-14

Warehouse operators and third-party logistics (3PL) providers use UPCgen to generate ITF-14 barcodes for labeling outer cases and pallets. ITF-14 is the standard for case-level labeling in the supply chain, and UPCgen makes it easy to create these codes in bulk. Operators can input their GTIN-14 numbers, generate thousands of codes at once, and export them as CSV for integration with warehouse management systems or as PDF sheets for direct printing. This streamlines the inbound and outbound logistics process, ensuring every case is scannable and traceable from the warehouse to the retail shelf.

Self-Publishers Generating ISBN Barcodes for Books

Self-publishers on platforms like Amazon KDP use UPCgen to generate ISBN barcodes for their book covers. The tool supports ISBN-13 format, ensuring the barcode includes the correct check digit and is formatted for retail scanning. Authors can generate a single barcode for their new title, download it as a high-resolution SVG or EPS file, and place it directly on their cover design. This eliminates the cost and complexity of hiring a designer for barcode creation and ensures the final product meets the standards of bookstores, distributors, and online retailers.

UPCgen offers a transparent, tiered pricing model designed to support your growth from a single barcode to enterprise-scale operations. Anonymous access is completely free, allowing you to generate one barcode every 24 hours. Registering for a free account unlocks five codes per day. For users who need more, subscription plans provide unlimited barcode generation, API access for developers, bulk export capabilities, and priority support. Specific pricing for subscription plans is available on the UPCgen website under the Pricing section.

Are the barcodes generated by UPCgen real and registered with GS1?

No. UPCgen generates barcodes with valid check digits and GS1-standard formatting, but these codes are not registered with GS1. They are suitable for internal use, inventory management, and listing on platforms that accept generated GTINs. If you need a globally unique, registered UPC code that will not conflict with other products, you must purchase a legitimate GS1 prefix and assign your own numbers. UPCgen is transparent about this distinction and provides a clear path for users who need registered codes.

Can I use UPCgen barcodes on Amazon, Shopify, or Etsy?

Yes. UPCgen barcodes are platform-approved and meet the structural requirements of Amazon, Shopify, Etsy, eBay, and Walmart supplier portals. Many sellers use these codes successfully for listing their products. However, please note that Amazon and some other marketplaces may require you to purchase a GS1-issued UPC for certain categories or if you are selling branded products. Always check the specific requirements of your selling platform before using generated barcodes.

How many barcodes can I generate for free?

Anonymous users can generate one barcode every 24 hours with no sign-up required. If you register for a free account, you can generate up to five barcodes every 24 hours. For higher volumes, including unlimited generation and API access, you can subscribe to a paid plan. This tiered approach allows you to start small and scale up as your business grows.

What file formats can I download my barcodes in?

You can download your generated barcodes in multiple professional formats, including PNG, PDF, SVG, EPS, and CSV. PNG and PDF are ideal for quick printing on label sheets. SVG and EPS provide vector graphics for high-resolution print production. CSV is perfect for importing barcode data into spreadsheets or inventory management systems. This variety ensures your barcodes work seamlessly with any workflow.