How to use Product Barcode Generator
Generate clean, high-density 1D product barcodes in Code 128, EAN-13, and UPC formats. Code 128 is the global standard for warehouse inventory SKUs, logistics tracking AWBs, and parcel labeling because it supports alphanumeric characters. EAN-13 and UPC-A are required for retail store checkout systems and point-of-sale scanners.
Select your barcode symbology: Code 128 (for alphanumeric SKUs), EAN-13 (13-digit retail), or UPC-A (12-digit retail).
Enter the exact value you want to encode. Preserve any necessary leading zeros.
Customize barcode height, bar width, and toggle human-readable text display below the bars.
Download the high-resolution PNG image and scan a printed physical sample before applying to packaging.
Key Performance & Quality Features
Engineered specifically for Indian e-commerce fulfillment, logistics compliance, and rapid dispatch workflows.
Standard Logistics Symbologies
Generates Code 128 (Subsets A, B, C), EAN-13, and UPC-A barcodes conforming to GS1 specifications.
Mandatory Quiet Zones
Automatically includes standard optical quiet zones (white margins) to ensure reliable laser and CCD scanner decoding.
Customizable Dimensions
Adjust bar width, height, and font sizes to fit 50×25mm polybags, retail tags, or large carton stickers.
Instant In-Browser Render
Constructs vector and raster barcode graphics locally on your device without server latency.
Printer & Document Compatibility Matrix
Selecting the Right Barcode Format for Your Inventory
Essential operational checkpoints to prevent pickup rejections, blurred barcodes, and courier SLA breaches.
Use Code 128 for warehouse inventory and internal SKU tracking. It accepts uppercase letters, lowercase letters, numbers, and common symbols, making it the most versatile 1D barcode format for e-commerce.
Retail barcodes (EAN-13 and UPC-A) require valid check digits. Generating an image of an EAN-13 number does not officially register that number with GS1. Ensure you have legitimately assigned retail barcodes before commercial distribution.
Never stretch or crop the white quiet zones on the sides of the barcode. Barcode scanners use these blank zones to establish background contrast and calibrate optical timing before reading the data bars.
Check Scanner Compatibility
Always print a sample on your thermal or laser printer and verify that your handheld warehouse scanner decodes the exact expected string in under 1 second.
Darkness and Thermal Heat
Avoid excessive print darkness settings that cause black bars to bleed into white spaces. The ratio between thin and thick bars must remain sharp.
Questions about this tool
Detailed guidance covering printer settings, paper dimensions, invoice separation, and courier scanning requirements.
Does generating an EAN-13 barcode give me an officially registered product code?
No. This tool creates an optical image of the data value you provide. Official retail product barcodes (GTIN/EAN) must be licensed directly from GS1 to ensure global uniqueness in marketplace catalogs.
Can I encode letters and numbers together in a SKU barcode?
Yes! Select the Code 128 format. It supports full alphanumeric strings, such as 'TSHIRT-BLK-XL-001', which makes it ideal for apparel and multi-variant e-commerce stock.
Why won't my barcode scanner read the printed barcode?
Common reasons include: (1) trimming the white quiet zones on the sides, (2) printing with low contrast or low thermal darkness, (3) resizing the image non-uniformly which alters bar ratios, or (4) encoding unsupported characters in EAN/UPC.
Can I print these barcodes on 50×25mm thermal stickers?
Yes! Download the PNG and import it into our Thermal SKU Barcode Maker tool, which formats barcodes onto standard 50×25mm or 38×25mm roll stickers with MRP and product descriptions.
100% Private On-Device Processing
Shipping manifests and delivery labels contain sensitive customer names, addresses, phone numbers, and financial invoice details. Unlike traditional converters that upload your PDFs to remote cloud servers, LabelCropTools processes and renders all documents directly inside your web browser using client-side WebAssembly. Your files never touch external servers or third-party databases.
Continue your dispatch workflow
Explore related fulfillment tools and operational guides to streamline daily seller operations.