UPCgen

UPCgen is the fastest, most straightforward barcode generator on the internet. Built for speed and simplicity, it renders and generates valid UPC, EAN, ISBN, GTIN, ITF-14, Code 128, FNSKU, and Data Matrix barcodes in seconds. No bloated software. No confusing checkbox-soup of options. No fake "free" UPCs that collide with real registered products. Just one clean page that generates a valid code, downloads cleanly, and is honest about when you need a real GS1 number. The product is designed for 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 generating ISBN barcodes, pharma operators producing Data Matrix codes for DSCSA or FMD compliance, and developers integrating barcode generation into their stack via API. Every code generated passes GS1 standard validation and meets the requirements of major platforms like Amazon, Shopify, Etsy, eBay, and Walmart supplier portals. You can generate one code or 10,000 at once, then export to CSV, PNG sheets, PDF, SVG, or EPS for professional print. Anonymous generation is available with no sign-up needed, allowing one code every 24 hours for free. Registration is also free and unlocks five codes every 24 hours. For higher volumes, subscription plans provide unlimited access. With step-by-step guides for adding barcodes to listings on Amazon, Shopify, Etsy, eBay, Walmart, and Amazon KDP, plus dedicated generators for each barcode type, UPCgen is the most trusted free barcode generator for sellers, warehouses, publishers, and anyone who needs a usable code instantly.

Platform-Approved Validation

Every barcode generated by UPCgen passes GS1 standard validation with a correct check digit. This means your codes are accepted on Amazon, Shopify, Etsy, eBay, and Walmart supplier portals without rejection. You get peace of mind that your labels will work the first time, saving you from costly returns or listing delays. The validation is automatic and instant, so you never have to manually verify a check digit again. Whether you are printing FNSKU labels for FBA or adding GTINs to Shopify listings, the code is guaranteed to be structurally correct and compliant with platform requirements.

Blazing Fast Bulk Generation

Generate 1 or 10,000 barcodes at once with zero lag. UPCgen handles high-volume requests effortlessly, making it perfect for warehouses, 3PLs, and large sellers who need hundreds or thousands of labels in a single session. You can export your batch as CSV, PNG sheets, PDF, SVG, or EPS for professional printing. The bulk generation engine is optimized for speed, so you are not waiting around. This feature alone saves hours compared to manual barcode creation or using bloated software that crashes under load.

Multi-Format Export

Download your barcodes in the format that works for your workflow. UPCgen supports CSV for inventory management, PNG sheets for quick label printing, PDF for professional document integration, SVG for scalable vector graphics, and EPS for high-end print production. Each export is clean, high-resolution, and ready for immediate use. No more converting files or dealing with low-quality raster images. You get exactly what you need, exactly when you need it, with one click.

Anonymous and Free Tier

You can generate a valid barcode without creating an account. UPCgen offers anonymous generation with one code every 24 hours completely free. No email required, no tracking, no upsells. If you need more, registration is free and increases your limit to five codes every 24 hours. For power users, subscription plans unlock unlimited generation. This tiered approach ensures that casual users are not forced to pay, while professionals get the volume they need without friction.

Amazon FBA Sellers Printing FNSKU Labels

Amazon FBA sellers need FNSKU labels that are scannable and compliant with Amazon's strict requirements. UPCgen generates valid FNSKU barcodes instantly, allowing you to print labels for inbound shipments without delays. You can generate one label for a single unit or thousands for a full inventory batch. The codes pass Amazon's validation checks, so your products are received and processed without issue. This eliminates the risk of label rejection, which can cause costly returns and storage fees. With bulk export to PDF or PNG sheets, you can print directly onto label stock and be ready to ship in minutes.

Shopify and Etsy Sellers Adding GTINs to Listings

E-commerce platforms like Shopify and Etsy require GTINs (Global Trade Item Numbers) for product listings to improve search visibility and compliance. UPCgen generates valid GTIN barcodes, including UPC and EAN formats, that meet platform standards. You can quickly add these codes to your product pages, ensuring your items are discoverable and eligible for promotional features. The process takes seconds, and you can export the barcode image directly for upload. This is especially useful for sellers who source products from multiple suppliers and need unique codes for each SKU.

Warehouses and 3PLs Labeling Outer Cases with ITF-14

Warehouses and third-party logistics providers need ITF-14 barcodes for outer case labeling to streamline shipping and inventory management. UPCgen generates ITF-14 codes that are GS1 compliant and scannable by warehouse scanners. You can generate codes for multiple cases in bulk, then export to CSV for integration with your warehouse management system or to PDF for direct label printing. This reduces manual data entry errors and speeds up the packing process. The codes work with all major carrier systems, ensuring your shipments move through the supply chain without hiccups.

Self-Publishers Generating ISBN Barcodes

Self-publishers on Amazon KDP and other platforms need ISBN barcodes for book covers. UPCgen generates valid ISBN barcodes that include the correct check digit and are formatted for print. You can generate a single ISBN barcode or batch multiple ISBNs for a series of books. The barcode exports as high-resolution SVG or EPS, which is perfect for professional cover design software. This eliminates the need to hire a designer or use expensive software just to create a barcode. You get a print-ready file in seconds, saving time and money.

Do I need to sign up to use UPCgen?

No, you can generate barcodes anonymously without creating an account. The free anonymous tier allows one barcode every 24 hours. If you need more, registration is free and increases your limit to five codes every 24 hours. For unlimited generation, subscription plans are available. This gives you flexibility to try the service before committing to a paid plan.

Are the barcodes generated by UPCgen valid for Amazon and Shopify?

Yes, every barcode generated by UPCgen passes GS1 standard validation with a correct check digit. The codes are accepted on Amazon, Shopify, Etsy, eBay, and Walmart supplier portals. For FNSKU labels specifically, the codes meet Amazon's requirements for inbound shipments. However, note that UPCgen generates valid codes for labeling and listing purposes, but it does not issue official GS1 company prefixes. If you need a registered UPC number for your brand, you must purchase a GS1 prefix separately.

Can I generate barcodes in bulk?

Yes, UPCgen supports bulk generation of up to 10,000 barcodes at once. You can choose from multiple barcode types including UPC, EAN, ISBN, ITF-14, Code 128, FNSKU, and Data Matrix. After generating, you can export the batch as CSV, PNG sheets, PDF, SVG, or EPS. The bulk generation engine is fast and reliable, making it ideal for warehouses, 3PLs, and large sellers.

What export formats are available?

UPCgen supports CSV, PNG sheets, PDF, SVG, and EPS exports. CSV is best for inventory management and data integration. PNG sheets are great for quick label printing on standard label stock. PDF is ideal for professional document integration. SVG and EPS are vector formats perfect for high-end print production, such as book covers or product packaging. All exports are clean, high-resolution, and ready for immediate use.