UPCgen

UPCgen is the simplest barcode generator available online. It allows you to create valid, usable barcodes in seconds without needing to download complicated software or navigate confusing settings. The tool supports a wide range of barcode types including UPC, EAN, ISBN, GTIN, ITF-14, Code 128, FNSKU, and Data Matrix. Whether you are an Amazon FBA seller printing FNSKU labels, a Shopify or Etsy seller adding GTINs to your product listings, a warehouse operator labeling outer cases with ITF-14, a self-publisher generating ISBN barcodes for your book, or a pharma operator producing Data Matrix codes for compliance, UPCgen has you covered. The main value proposition is simplicity and honesty. Every code generated passes GS1 standard validation and includes a correct check digit. The platform is transparent about when you need a real GS1 number versus when a generated code is sufficient. You can generate one code anonymously every 24 hours for free, or register for a free account to get five codes per day. For higher volume needs, subscription plans are available. UPCgen also offers step-by-step guides for adding barcodes to major platforms like Amazon, Shopify, Etsy, eBay, Walmart, and Amazon KDP, making it a comprehensive solution for sellers, warehouses, publishers, and developers.

Valid and Compliant Barcodes

Every barcode you generate with UPCgen is validated for a correct check digit and passes GS1 standard validation. This ensures your codes meet the requirements of major selling platforms like Amazon, Shopify, Etsy, eBay, and Walmart supplier portals. You can trust that your barcodes will scan correctly and be accepted by retailers and logistics partners. The validation happens automatically in the background, so you never have to worry about errors or rejected codes.

Multiple Barcode Types

UPCgen supports a wide variety of barcode formats to meet different industry needs. You can generate UPC-A, UPC-E, EAN-13, EAN-8, ISBN, ITF-14, Code 128, FNSKU, and Data Matrix barcodes. This means you can use a single tool for all your barcode needs, whether you are labeling individual products, outer cases, or creating codes for pharmaceutical compliance. The interface makes it easy to select the right format for your specific use case.

Bulk Generation and Export Options

Need to generate hundreds or thousands of barcodes at once? UPCgen allows you to generate from 1 to 10,000 codes in a single session. You can then export your barcodes in multiple formats including CSV, PNG sheets, PDF, SVG, or EPS. This is perfect for professional print runs, inventory management, or listing products across multiple sales channels. The bulk feature saves you hours of manual work and ensures consistency across all your labels.

Anonymous and Free Tier

You can generate your first barcode completely anonymously without creating an account. This is ideal for users who just need a quick code and do not want to commit to a signup process. The free anonymous tier gives you one code every 24 hours. If you register for a free account, you get five codes every 24 hours. This generous free offering allows you to test the service thoroughly before deciding if you need a paid subscription for higher volume.

Amazon FBA Sellers Printing FNSKU Labels

Amazon FBA sellers need to print FNSKU labels for every product they send to Amazon fulfillment centers. UPCgen makes this process simple. You can generate individual FNSKU codes or create batches of labels for your entire inventory. The codes are formatted correctly and pass Amazon's scanning requirements. The export options let you download labels in PNG or PDF formats that are ready to print on standard label sheets. This saves you from using expensive third-party label services or dealing with complex software.

Shopify and Etsy Sellers Adding GTINs to Listings

When selling on Shopify or Etsy, you often need to provide a GTIN (Global Trade Item Number) for your products. UPCgen allows you to generate valid UPC or EAN barcodes that serve as GTINs for your listings. The platform provides step-by-step guides specifically for adding these codes to your Shopify or Etsy product pages. This helps you meet marketplace requirements, improves product discoverability, and ensures your listings are compliant with platform policies.

Self-Publishers Generating ISBN Barcodes

If you are a self-published author using Amazon KDP or other print-on-demand services, you need an ISBN barcode for the back cover of your book. UPCgen has a dedicated ISBN generator that creates barcodes formatted specifically for books. You can generate the barcode that matches your assigned ISBN number, and it will include the correct check digit and formatting. The downloadable file is ready to place on your book cover design, saving you from hiring a graphic designer for this specific task.

Warehouses and 3PLs Labeling Outer Cases with ITF-14

Warehouses and third-party logistics providers need to label outer cartons with ITF-14 barcodes for efficient shipping and inventory management. UPCgen supports ITF-14 generation, which is the standard barcode format for case-level labeling. You can generate these codes in bulk and export them as high-resolution PNG or EPS files suitable for industrial label printers. This ensures your shipments are scannable throughout the supply chain and meet the requirements of major retailers and distributors.

Do I need to buy a real GS1 UPC code or can I use a generated one?

It depends on where you are selling. For most online marketplaces like Amazon, Shopify, and Etsy, you can use a generated barcode as long as it is unique to your product and passes validation. However, if you are selling in physical retail stores or need your barcode to be globally unique and registered in the GS1 database, you must purchase a real GS1 prefix and assign your own numbers. UPCgen is transparent about this and provides guidance on when a generated code is sufficient versus when you need a real GS1 number.

How many barcodes can I generate for free?

You can generate one barcode every 24 hours completely anonymously without signing up. If you create a free account, you can generate up to five barcodes every 24 hours. This is enough for testing the service or for very small-scale needs. For higher volume requirements, you can subscribe to a paid plan that allows you to generate more codes per day without limits.

What file formats can I download my barcodes in?

UPCgen offers multiple export formats to suit different needs. You can download your barcodes as PNG images for quick use, as SVG or EPS vector files for professional design work, as PDF documents for easy printing, or as CSV files for bulk data management. When generating multiple barcodes at once, you can also download them as a single PNG sheet or PDF document containing all your codes organized in a grid.

Does UPCgen work for pharmaceutical compliance like DSCSA?

Yes, UPCgen supports Data Matrix barcodes which are required for pharmaceutical compliance under regulations like DSCSA in the United States and FMD in Europe. Data Matrix codes can encode serial numbers, lot numbers, expiration dates, and other product information needed for track-and-trace systems. The generated codes are valid and can be scanned by standard pharmaceutical scanning equipment. If you have specific compliance requirements, you can contact UPCgen for bespoke services.