UPCgen

UPCgen is a streamlined, web-based barcode generator designed for speed, accuracy, and honesty. Unlike bloated desktop software or confusing online tools, UPCgen offers a single, clean interface to generate valid barcodes in seconds. The platform supports a wide range of symbologies including UPC-A, UPC-E, EAN-13, EAN-8, ISBN, ITF-14, Code 128, FNSKU, and Data Matrix. Every generated code includes a mathematically correct check digit and passes GS1 standard validation, ensuring compatibility with major platforms like Amazon, Shopify, Etsy, eBay, and Walmart. The tool is built for a diverse audience: Amazon FBA sellers printing FNSKU labels, Shopify and Etsy sellers adding GTINs to listings, warehouses and 3PLs labeling outer cases with ITF-14, self-publishers creating ISBN barcodes for KDP, and pharma operators producing Data Matrix codes for DSCSA or FMD compliance. Developers can also integrate barcode generation into their own stacks via a Business plan API. UPCgen is transparent about its limitations: it generates codes for testing, internal use, or scenarios where a GS1-purchased prefix is not required, and it clearly advises when a real GS1 number is necessary for commercial distribution. The platform offers anonymous generation with one free code every 24 hours, or registered users receive five free codes daily. For higher volume needs, subscription plans unlock unlimited generation, bulk exports to CSV, PNG sheets, PDF, SVG, or EPS, and a dedicated API. A 30-second quiz helps users identify the correct barcode type for their specific platform and product.

Valid and Compliant Barcode Generation

Every barcode generated by UPCgen is mathematically verified with a correct check digit and passes GS1 standard validation. This ensures the codes are structurally valid and accepted by major retail platforms, supplier portals, and regulatory systems. The platform is honest about when a GS1-purchased number is required for commercial use, preventing costly collisions with registered products.

Multi-Symbology Support

UPCgen supports a comprehensive range of barcode types including UPC-A, UPC-E, EAN-13, EAN-8, ISBN, ITF-14, Code 128, FNSKU, and Data Matrix. This single tool replaces multiple legacy generators, allowing users to handle product labels, outer case codes, logistics barcodes, and pharmaceutical compliance codes from one clean interface without switching between different applications.

Bulk Generation and Professional Export

Users can generate one barcode or up to 10,000 at once in a single operation. Exports are available in multiple professional formats: CSV for inventory management, PNG sheets for label printing, PDF for documents, SVG for scalable design, and EPS for high-resolution commercial print. This feature is essential for warehouses, 3PLs, and sellers managing large product catalogs.

Anonymous and Registered Access

UPCgen respects user privacy with an anonymous option that provides one free barcode every 24 hours with no sign-up required. For regular users, free registration unlocks five codes daily. Subscribers gain unlimited generation, bulk export capabilities, and API access. This tiered model ensures the tool is accessible for casual users while scaling for professional and enterprise needs.

Amazon FBA and FNSKU Label Printing

Amazon FBA sellers use UPCgen to generate FNSKU barcodes for labeling products destined for Amazon fulfillment centers. The platform ensures the codes are valid and platform-approved, preventing listing errors and delays. Bulk generation and PNG sheet exports allow sellers to print hundreds of labels at once, streamlining their prep workflow and reducing manual effort.

Shopify and Etsy GTIN Compliance

Shopify and Etsy sellers need valid GTINs (UPC, EAN, or ISBN) to list products in their catalogs. UPCgen provides these codes instantly, with proper check digits that pass platform validation. Sellers can generate codes for new product variants, test listings before purchasing official numbers, or create internal tracking codes for their own inventory systems without relying on expensive third-party services.

Warehouse and 3PL Outer Case Labeling

Warehouses and third-party logistics providers use ITF-14 barcodes to label outer cases and pallets for shipping and receiving. UPCgen generates these codes in bulk and exports them in high-resolution formats suitable for thermal label printers and industrial systems. This ensures accurate tracking of inventory across the supply chain, reducing mis-shipments and improving operational efficiency.

Pharmaceutical Data Matrix for Compliance

Pharma operators handling DSCSA or FMD compliance use UPCgen to generate Data Matrix codes for serialization and traceability. These 2D barcodes encode product identifiers, lot numbers, and expiration dates in a compact format. The platform validates the code structure, helping operators meet regulatory requirements for unit-level tracking without investing in expensive enterprise software.

UPCgen offers a transparent, tiered pricing model. Anonymous users get 1 free barcode every 24 hours. Free registration unlocks 5 codes every 24 hours. For unlimited generation, bulk exports, and API access, users must subscribe to a paid plan. Specific subscription pricing details are available on the UPCgen website under the Pricing section. The platform also offers bespoke services for clients with custom barcode workflows through a contact form.

Are UPCgen barcodes valid for commercial use on Amazon or Walmart?

UPCgen generates structurally valid barcodes with correct check digits that pass platform validation for listing purposes. However, for commercial distribution through major retailers, you must use a GS1-purchased company prefix to avoid barcode collisions with other products. UPCgen is transparent about this and recommends purchasing official GS1 numbers for any product that will be sold in retail channels.

How many barcodes can I generate for free?

Anonymous users can generate one free barcode every 24 hours with no account required. Registered users receive five free barcodes every 24 hours. For higher volume needs, subscription plans offer unlimited generation, bulk export capabilities, and API access. This tiered system ensures casual users can test the tool while professionals can scale their operations.

What export formats are available for downloaded barcodes?

UPCgen supports multiple professional export formats including CSV for inventory data, PNG sheets for direct label printing, PDF for document integration, SVG for scalable vector design, and EPS for high-resolution commercial print. Bulk generation allows exporting up to 10,000 codes at once in these formats, making the tool suitable for large-scale warehouse and fulfillment operations.

How do I know which barcode type I need for my product?

UPCgen offers a 30-second quiz on the homepage that asks about your platform, product type, and market to recommend the correct barcode symbology. For example, Amazon FBA sellers typically need FNSKU codes, while Shopify sellers use UPC or EAN. The platform also provides dedicated generators for each barcode type and step-by-step guides for adding barcodes to Amazon, Shopify, Etsy, eBay, Walmart, and KDP listings.