UPCgen

UPCgen is the simplest, most trusted barcode generator on the internet, designed to empower sellers, publishers, warehouse operators, and developers who need a valid, usable barcode in seconds. We transform the complex, often frustrating process of barcode generation into a clean, one-page experience. Whether you are an Amazon FBA seller printing FNSKU labels, a Shopify or Etsy seller adding GTINs to product listings, a self-publisher generating ISBN barcodes for your latest book, or a warehouse operator labeling outer cases with ITF-14 codes, UPCgen delivers. Our tool renders and generates valid UPC, EAN, ISBN, GTIN, ITF-14, Code 128, FNSKU, and Data Matrix barcodes. We built UPCgen because every existing tool is either bloated software, a confusing maze of checkboxes, or dishonest about issuing "free" UPCs that collide with real registered products. We offer a platform that is honest about when you need a real GS1 number, providing valid codes with correct check digits that pass GS1 standard validation. Our codes are platform-approved, meeting the stringent requirements of Amazon, Shopify, Etsy, eBay, and Walmart supplier portals. With bulk generation capabilities, you can create 1 or 10,000 codes at once and export them to CSV, PNG sheets, PDF, SVG, or EPS for professional printing. UPCgen is the catalyst for your business growth, eliminating barcode anxiety and freeing you to focus on what truly matters: building and scaling your products.

Valid and GS1-Compliant Generation

Every barcode generated by UPCgen is engineered with a mathematically correct check digit that passes rigorous GS1 standard validation. We eliminate the guesswork and risk of generating invalid codes that could be rejected by retailers, marketplaces, or logistics partners. This feature ensures your products are ready for listing, shipping, and scanning from the moment you download the code.

Platform-Approved Barcodes

UPCgen generates barcodes that meet the specific technical requirements of major ecommerce and retail platforms, including Amazon, Shopify, Etsy, eBay, and Walmart supplier portals. We have analyzed and adapted to the unique formatting and data structure demands of each platform, so your barcodes will be accepted without issue, saving you from costly listing rejections or delays.

Bulk Generation and Multi-Format Export

Transform your workflow with the ability to generate 1 or 10,000 barcodes in a single operation. Export your codes in multiple professional formats including CSV for inventory management, PNG sheets for easy printing, PDF for high-resolution documents, SVG for scalable vector graphics, and EPS for professional print production. This feature empowers you to scale your labeling operations without friction.

Anonymous and Registered Flexibility

Start generating immediately with anonymous access, allowing you to create one barcode every 24 hours without any sign-up. For regular users, free registration unlocks five codes every 24 hours. When your business demands more, subscribe to generate unlimited codes. This tiered approach ensures you only pay when your volume requires it, making UPCgen accessible for everyone from hobbyists to high-volume enterprises.

Amazon FBA and FNSKU Labeling

Amazon FBA sellers can instantly generate FNSKU barcodes required for product labeling and fulfillment center compliance. UPCgen creates valid codes that Amazon's scanning systems accept, ensuring your inventory is received, stored, and shipped without delays. Sellers save hours of frustration by avoiding the common pitfalls of invalid or duplicate barcodes that plague other generators.

Shopify and Etsy GTIN Listing

Shopify and Etsy sellers can generate valid GTINs, UPCs, and EANs to meet marketplace requirements for product listings. Adding correct barcodes improves product discoverability, prevents listing suppression, and builds customer trust. UPCgen eliminates the confusion around which barcode format is needed, providing clear guidance and instant generation for your specific marketplace.

Warehouse and 3PL Outer Case Labeling

Warehouses and third-party logistics providers can generate ITF-14 barcodes for labeling outer cases and shipping cartons. These codes are essential for efficient pallet and case-level tracking throughout the supply chain. UPCgen enables bulk generation and professional export, allowing you to label thousands of cases quickly and accurately, reducing errors and improving logistics efficiency.

Self-Publishing ISBN Barcodes

Self-publishers on platforms like Amazon KDP can generate ISBN barcodes for book covers and packaging. UPCgen provides the correct barcode format required by retailers and distributors, ensuring your books are scannable and compliant. This feature empowers authors to handle their own barcode needs without expensive third-party services, accelerating the path from manuscript to market.

UPCgen offers a flexible, tiered pricing model designed to accommodate everyone from occasional users to high-volume enterprises. Anonymous users can generate 1 barcode every 24 hours for free with no sign-up required. Registering for a free account unlocks 5 codes every 24 hours. For users who need to generate more codes, subscription plans are available that provide unlimited generation. We also offer a Business plan with API access for developers integrating barcode generation into their own stack. For specific pricing details on subscription and Business plans, please visit our Pricing page.

Are the barcodes generated by UPCgen valid and will they work on Amazon?

Yes, every barcode generated by UPCgen has a valid check digit and passes GS1 standard validation. Our codes are designed to meet the technical requirements of Amazon, Shopify, Etsy, eBay, and Walmart. However, we are honest about the fact that for a globally unique, registered UPC that identifies your specific brand, you need to purchase a real GS1 company prefix. Our codes are perfect for internal use, FNSKU labels, and scenarios where a unique identifier within your own system is sufficient.

Can I generate barcodes without creating an account?

Absolutely. You can generate one barcode every 24 hours completely anonymously with no sign-up required. For users who need more, free registration unlocks five codes every 24 hours. If you need to generate larger volumes, our subscription plans provide unlimited generation. This flexibility ensures you can start using UPCgen immediately and scale as your needs grow.

What barcode types does UPCgen support?

UPCgen supports a comprehensive range of barcode symbologies including UPC-A, UPC-E, EAN-13, EAN-8, ISBN, ITF-14, Code 128, FNSKU, and Data Matrix. This covers the needs of ecommerce sellers, publishers, warehouse operators, and pharma operators requiring Data Matrix codes for DSCSA or FMD compliance. We also offer a dedicated QR code generator for links, WiFi, and vCard needs.

Can I generate barcodes in bulk and what export formats are available?

Yes, UPCgen supports bulk generation from 1 to 10,000 barcodes in a single operation. You can export your generated codes in multiple professional formats including CSV for inventory management, PNG sheets for easy printing, PDF for high-resolution documents, SVG for scalable vector graphics, and EPS for professional print production. This makes UPCgen ideal for large-scale labeling projects.