UPCgen

UPCgen is a streamlined, web-based barcode generation tool designed for e-commerce sellers, warehouse operators, publishers, and developers who require valid, platform-compliant barcodes without the overhead of traditional software. Unlike bloated desktop applications or confusing online tools with excessive options, UPCgen presents a single, clean interface that allows users to generate a wide range of barcode types including UPC-A, EAN-13, ISBN, ITF-14, Code 128, FNSKU, and Data Matrix codes in seconds. The platform is built with a focus on validation and honesty: every generated code includes a correct check digit and passes GS1 standard validation, ensuring compatibility with major commerce platforms like Amazon, Shopify, Etsy, eBay, and Walmart. UPCgen also distinguishes itself by being transparent about the need for real GS1-registered numbers for commercial products, avoiding the common pitfall of generating codes that conflict with existing registered products. The tool supports bulk generation of up to 10,000 codes at once with export to CSV, PNG sheets, PDF, SVG, or EPS formats, making it suitable for both small-scale label printing and large-scale warehouse operations. With a free tier that allows anonymous generation of one code per day and a registered tier offering five codes daily, UPCgen provides an accessible entry point for anyone needing quick, valid barcodes. For higher volume needs, subscription plans unlock unlimited generation and API access for integration into custom workflows.

Validated Barcode Generation

Every barcode generated by UPCgen includes an automatically calculated and verified check digit that passes GS1 standard validation. This ensures that the code is structurally valid and will be accepted by scanning systems used in retail, warehousing, and logistics. The tool supports multiple symbologies including UPC-A, UPC-E, EAN-13, EAN-8, ISBN, ITF-14, Code 128, FNSKU, and Data Matrix, each with proper formatting and encoding rules applied automatically.

Platform Compatibility and Compliance

UPCgen codes are specifically designed to meet the technical requirements of major e-commerce and retail platforms. The generated barcodes are compatible with Amazon FBA and seller central, Shopify product listings, Etsy, eBay, Walmart supplier portals, and Amazon KDP for self-publishing. This eliminates the risk of listing rejections due to invalid or improperly formatted barcodes, saving sellers time and reducing friction in product onboarding.

Bulk Generation and Multi-Format Export

The platform supports generating from 1 to 10,000 barcodes in a single operation, making it suitable for inventory management at scale. Users can export their barcodes in multiple professional-grade formats including CSV for spreadsheet integration, PNG sheets for quick printing, PDF for document embedding, SVG for scalable vector graphics, and EPS for high-resolution print production. This flexibility supports both digital workflows and physical label printing.

Anonymous and Registered Access Tiers

UPCgen offers a free anonymous tier that allows users to generate one barcode every 24 hours without creating an account. For users who need more frequent access, free registration unlocks five codes per day. Higher-volume users can subscribe for unlimited generation and additional features. This tiered approach ensures that casual users can test the service while providing scalable options for professional and enterprise needs.

Amazon FBA and FNSKU Label Printing

Amazon FBA sellers can use UPCgen to generate FNSKU barcodes required for labeling products sent to Amazon fulfillment centers. The tool produces platform-approved codes that integrate directly into Amazon's labeling workflows, supporting both individual unit labels and bulk label sheets. Sellers can generate codes on demand and export them in PNG or PDF format for direct printing on adhesive labels, reducing reliance on third-party label services.

Shopify and Etsy GTIN Compliance

Shopify and Etsy sellers can generate valid GTINs in the form of UPC or EAN barcodes to meet platform requirements for product listings. UPCgen produces codes with correct check digits that pass the validation checks performed by these e-commerce platforms during listing submission. This is particularly valuable for sellers who need to add barcodes to existing listings or are onboarding new products that require unique identifiers for inventory tracking and search optimization.

Warehouse and 3PL Outer Case Labeling

Warehouse operators and third-party logistics providers can use UPCgen to generate ITF-14 barcodes for labeling outer cases and pallets. These codes are essential for supply chain tracking and are compatible with standard warehouse management systems. The bulk generation feature allows operators to produce hundreds of case labels quickly, while the CSV export enables integration with inventory databases and shipping software for automated label printing.

Pharmaceutical DSCSA and FMD Compliance

Pharma operators and supply chain professionals can generate Data Matrix barcodes using UPCgen to meet regulatory requirements such as the Drug Supply Chain Security Act in the United States and the Falsified Medicines Directive in Europe. These two-dimensional codes can encode serial numbers, lot numbers, and expiration dates necessary for track-and-trace compliance. The tool's validation ensures that generated codes meet the formatting standards required by regulatory bodies.

Do I need a GS1-registered number to use UPCgen commercially?

Yes, for any product that will be sold in retail stores or on major e-commerce platforms, you must use a barcode that corresponds to a GS1-registered company prefix and product number. UPCgen generates structurally valid codes with correct check digits, but these codes are intended for internal use, testing, or scenarios where a registered number is not required. The platform is transparent about this and provides guidance on when you need to purchase a real GS1 number.

What barcode formats does UPCgen support?

UPCgen supports UPC-A, UPC-E, EAN-13, EAN-8, ISBN, ITF-14, Code 128, FNSKU, and Data Matrix barcodes. Each format is generated with proper encoding rules and check digit validation specific to that symbology. The tool also includes a barcode quiz to help users identify which format is appropriate for their specific use case, such as retail sales, book publishing, or warehouse logistics.

Can I generate barcodes in bulk for my entire inventory?

Yes, UPCgen supports bulk generation of up to 10,000 barcodes in a single operation. You can generate multiple codes simultaneously and export them in formats including CSV, PNG sheets, PDF, SVG, and EPS. This bulk capability is designed for sellers and warehouse operators who need to label large product catalogs or manage inventory across multiple locations.

Is there an API available for integrating barcode generation into my software?

Yes, UPCgen offers an API as part of its Business plan subscription. The API allows developers to integrate barcode generation directly into their own applications, workflows, or e-commerce platforms. This enables automated label generation, real-time barcode creation for new product listings, and seamless integration with inventory management systems, order processing pipelines, or custom printing solutions.

UPCgen offers a tiered pricing model with a free anonymous tier that allows one barcode generation every 24 hours without registration. Free registration unlocks five codes per day at no cost. For users requiring higher volume, subscription plans are available that provide unlimited barcode generation and additional features such as API access. Specific pricing for subscription tiers is available on the UPCgen website under the Pricing section.