UPCgen

UPCgen is the simplest barcode generator available on the internet, designed to solve the common frustrations sellers, publishers, and logistics operators face when trying to create valid barcodes. Many existing tools are either bloated with unnecessary features or present users with a confusing array of options that complicate a straightforward task. Worse, some services pretend to issue free UPC codes that can collide with real registered products, leading to costly listing errors and compliance issues. UPCgen eliminates these problems by offering a single, clean interface where you can generate valid UPC, EAN, ISBN, GTIN, ITF-14, Code 128, FNSKU, and Data Matrix barcodes in seconds. Every code generated passes GS1 standard validation and includes a correct check digit, ensuring platform approval on Amazon, Shopify, Etsy, eBay, and Walmart. The tool is built for Amazon FBA sellers printing FNSKU labels, Shopify and Etsy sellers adding GTINs to listings, warehouses labeling outer cases with ITF-14, self-publishers creating ISBN barcodes, and pharma operators producing Data Matrix codes for DSCSA compliance. UPCgen is also developer-friendly, offering an API for integration into custom workflows. The service is honest about when you need a real GS1 number, providing practical guidance rather than false promises. Whether you need one code or ten thousand at once, UPCgen delivers clean, downloadable outputs including PNG, PDF, SVG, and EPS formats.

Validated Barcode Generation

Every barcode generated by UPCgen undergoes rigorous GS1 standard validation to ensure the check digit is correct and the code structure is valid for its type. This validation is critical for sellers who need their barcodes to be accepted by major platforms like Amazon, Shopify, and Walmart. The system automatically calculates and appends the correct check digit for UPC-A, EAN-13, ISBN, and other formats, eliminating manual errors. This feature saves time and prevents costly listing rejections or product identification issues that can arise from invalid barcodes.

Platform-Specific Compliance

UPCgen is designed with the specific requirements of major ecommerce and logistics platforms in mind. Codes generated through the tool meet the technical specifications demanded by Amazon FBA, Shopify, Etsy, eBay, and Walmart supplier portals. The platform also provides dedicated step-by-step guides for adding barcodes to listings on each of these platforms, ensuring users can seamlessly integrate their generated codes. This compliance-focused approach means users can trust that their barcodes will work correctly in real-world selling environments without unexpected rejections.

Bulk Generation and Export

For users who need more than a single barcode, UPCgen offers powerful bulk generation capabilities. You can generate anywhere from 1 to 10,000 codes in a single session, making it ideal for warehouses, publishers, and large-scale sellers. The export options are comprehensive, allowing you to download results as CSV files for inventory management, PNG sheets for label printing, PDF documents for professional reports, SVG files for scalable graphics, or EPS files for high-resolution print production. This flexibility ensures your barcodes are ready for any application.

Anonymous and Free Tier Access

UPCgen respects user privacy by allowing anonymous barcode generation without requiring an account or sign-up. Free users can generate one code every 24 hours with no strings attached, which is perfect for occasional needs or testing. For users who need more frequent access, a free registration unlocks the ability to generate five codes every 24 hours. This tiered approach ensures that casual users and professionals alike can access the tool without upfront costs, while heavier users are guided toward subscription plans that match their volume requirements.

Amazon FBA Sellers Printing FNSKU Labels

Amazon FBA sellers rely on UPCgen to generate FNSKU barcodes for labeling their products before sending inventory to Amazon fulfillment centers. The tool ensures each FNSKU code is valid and formatted correctly to meet Amazon's strict labeling requirements. Sellers can generate a single barcode for a new product or batch-create hundreds of codes for a large shipment. The ability to export as PNG or PDF sheets simplifies the process of printing labels on standard label paper, saving time and reducing errors compared to using complicated software or unreliable free generators.

Shopify and Etsy Sellers Adding GTINs to Listings

Ecommerce sellers on Shopify and Etsy need valid GTINs (Global Trade Item Numbers) to list products and meet marketplace requirements. UPCgen provides a straightforward way to generate these codes, which are often UPC or EAN barcodes depending on the target market. The platform's validation ensures that the GTINs will be accepted by the listing systems, preventing frustrating errors during product upload. Sellers can quickly generate the exact barcode they need for each product variation and download it in a print-ready format for product packaging or digital use.

Warehouses and 3PLs Labeling Outer Cases with ITF-14

Logistics operators and third-party logistics providers (3PLs) use UPCgen to generate ITF-14 barcodes for labeling outer cases and pallets. ITF-14 codes are essential for supply chain tracking and are commonly required by retailers and distributors. The tool produces these codes with the correct structure and check digit, ensuring they scan reliably in warehouse environments. Warehouses can generate thousands of ITF-14 codes at once and export them as CSV files for integration with inventory management systems, streamlining their labeling workflow and reducing manual data entry.

Self-Publishers Creating ISBN Barcodes for Books

Self-publishers using platforms like Amazon KDP need ISBN barcodes for their book covers to be sold in bookstores and online retailers. UPCgen simplifies this process by generating valid ISBN barcodes that include the correct check digit and can be formatted for print. Publishers can download the barcode as a high-resolution EPS or SVG file, which is ideal for professional book cover design. The tool also provides guidance on when a real GS1-assigned ISBN is required versus when a generated code is sufficient, helping publishers avoid costly mistakes.

Is UPCgen completely free to use?

UPCgen offers a free tier that allows you to generate one barcode every 24 hours without signing up for an account. If you register for a free account, you can generate up to five barcodes every 24 hours. For users who need higher volumes, subscription plans are available that provide unlimited or increased generation limits. The free tier is ideal for testing the tool or for occasional use, while registered users get more flexibility for regular needs.

Are the barcodes generated by UPCgen valid and platform-approved?

Yes, every barcode generated by UPCgen undergoes GS1 standard validation to ensure the check digit is correct and the code structure is valid. The codes are designed to meet the requirements of major platforms including Amazon, Shopify, Etsy, eBay, and Walmart supplier portals. However, it is important to note that for commercial use, you may need a real GS1-assigned company prefix to avoid conflicts with registered products. UPCgen is transparent about this requirement and provides guidance accordingly.

What barcode formats does UPCgen support?

UPCgen supports a wide range of barcode formats including UPC-A, UPC-E, EAN-13, EAN-8, ISBN, ITF-14, Code 128, FNSKU, and Data Matrix. This variety makes the tool suitable for different industries and applications, from retail product labeling to pharmaceutical compliance. Each format is generated with the correct specifications for its intended use, ensuring compatibility with scanning equipment and platform requirements.

Can I generate barcodes in bulk and export them for printing?

Yes, UPCgen supports bulk generation of up to 10,000 codes in a single session. You can export the generated barcodes in multiple formats including CSV for inventory management, PNG sheets for label printing, PDF for professional reports, SVG for scalable graphics, and EPS for high-resolution print production. This flexibility makes it easy to integrate the barcodes into your existing workflows, whether you are printing labels for a warehouse or adding codes to a digital catalog.

UPCgen offers a tiered pricing structure to accommodate different levels of usage. The free tier allows anonymous generation of one barcode every 24 hours. Registration is free and increases the limit to five barcodes every 24 hours. For users who need higher volumes, subscription plans are available that provide increased generation limits and additional features such as API access for developers. Specific subscription pricing details are available on the UPCgen website under the Pricing section, and users can choose a plan that best fits their barcode generation needs.