Create professional barcodes for products, inventory, and tracking
Enter the data you want to encode in the barcode
Select the barcode symbology
Click "Generate Barcode" to create your barcode
Preview will appear here
Use EAN-13 or UPC-A for retail products. These are standard formats accepted by most retailers and POS systems.
Use CODE 128 for internal inventory tracking. It supports alphanumeric data and is highly reliable.
Use QR codes for marketing campaigns, contact information, and website links. They can store large amounts of data.
Use ITF-14 for shipping containers and logistics tracking. Designed for corrugated materials.
A barcode is a machine-readable representation of data, typically consisting of parallel lines (bars) and spaces of varying widths. Barcodes are used to store information about products, inventory items, or other objects, allowing for quick and accurate data entry using optical scanners.
Traditional barcodes with vertical lines. Data is encoded horizontally.
Matrix codes that store data in two dimensions. Higher capacity than 1D.
EAN-13 or UPC-A are industry standards. Required for most retail POS systems.
CODE 128 offers high density and alphanumeric support for internal tracking.
QR codes provide large data capacity and are easily scanned by smartphones.
For reliable scanning, ensure your barcodes meet these quality standards:
Product identification, pricing, inventory management, and checkout processing.
Patient identification, medication tracking, medical records, and equipment management.
Package tracking, warehouse management, shipping labels, and delivery confirmation.
Component tracking, quality control, work-in-progress monitoring, and finished goods.
Book tracking, student identification, asset management, and access control.
Ticketing, attendee tracking, access control, and registration management.
| Format | Capacity | Dimensions | Use Case |
|---|---|---|---|
| EAN-13 | 13 digits | 37.3 × 25.9mm | Retail products |
| UPC-A | 12 digits | 37.3 × 26.7mm | North American retail |
| CODE 128 | Variable (up to 48 characters) | Variable | Inventory, logistics |
| QR Code | Up to 2953 bytes | Variable (minimum 21×21 modules) | Marketing, URLs, contact info |
| Data Matrix | Up to 2335 alphanumeric characters | Minimum 10×10 modules | Small item marking |
Global standards for barcodes used in retail and supply chain. EAN and UPC codes follow GS1 specifications.
International standards for barcode quality, including ISO/IEC 15416 for linear barcodes and ISO/IEC 15415 for 2D codes.
Association for Automatic Identification and Mobility sets standards for barcode symbologies and scanning equipment.
1D (linear) barcodes store data horizontally using varying widths of bars and spaces. They're simple, widely supported, and ideal for basic product identification. 2D barcodes store data in both horizontal and vertical dimensions using patterns of dots, squares, or other shapes. They can hold much more information in a smaller space and include error correction for better reliability.
For retail products sold in stores, use EAN-13 (international) or UPC-A (North America). For internal inventory tracking, CODE 128 offers high density and alphanumeric support. For marketing materials where customers will scan with smartphones, QR codes provide the best user experience and can store URLs, contact information, or promotional content.
Use high contrast (dark bars on light background), maintain proper quiet zone (blank space around the barcode), choose appropriate size for scanning distance, and test with actual scanners before mass production. For 2D barcodes, select appropriate error correction levels based on expected usage conditions.
Yes, our barcode generator is completely free to use. You can create unlimited barcodes in various formats including QR codes, EAN, UPC, CODE 128, and more. Simply enter your data, customize the appearance, and download in PNG, SVG, or PDF format.
For printing, SVG (vector) format is ideal as it scales without quality loss. PNG is suitable for most printing needs if generated at high resolution (300 DPI minimum). PDF is excellent for professional printing and includes the barcode in a print-ready format. Avoid JPEG as it can introduce compression artifacts that affect scanning.
Enter your data (URL, text, contact info), choose appropriate error correction level (Medium/M is recommended for general use), select adequate size (minimum 200x200 pixels), use high contrast colors, and test the QR code with multiple scanning apps before deployment.
The quiet zone is the blank space required around a barcode (typically 10 times the width of the narrowest bar). It's essential because scanners need this space to detect where the barcode begins and ends. Without adequate quiet zone, barcodes may fail to scan or scan incorrectly.
Yes, you can customize colors, but maintain high contrast for reliable scanning. Traditional black bars on white background work best. For colored barcodes, ensure sufficient contrast between foreground and background. Avoid red on green or similar low-contrast combinations that scanners may struggle to read.
Error correction allows QR codes to be scanned even when partially damaged or obscured. Levels range from L (7% recovery) to H (30% recovery). Higher error correction makes codes more robust but also larger. Choose based on expected usage: L for controlled environments, M for general use, Q for outdoor use, H for harsh conditions.
Use professional barcode verification equipment that measures parameters like contrast, modulation, and decodeability according to ISO standards. For basic validation, test with multiple scanners and scanning apps under various lighting conditions. Ensure the barcode meets minimum quality grade requirements for your industry (typically Grade B or better).
EAN-13: minimum 37.3mm width, UPC-A: minimum 37.3mm width. CODE 128: minimum 1.5mm height, width varies by data. QR codes: minimum 21x21 modules, typically 20-30mm for scanning. Always consider scanning distance - larger barcodes for longer distances. Test readability at intended scanning distance.
Yes, most linear barcodes support human-readable text below the bars. This is useful for manual entry if scanning fails. Text should be clear, legible, and not interfere with the quiet zone. For 2D barcodes like QR codes, text is typically placed beside rather than below the code.
Barcodes can be printed on paper, cardboard, plastic, metal, fabric, and more. Choose appropriate printing method (laser, inkjet, thermal, screen printing) based on material and durability requirements. For harsh environments, consider protective coatings or specialized materials. Always test print quality on the actual material before production.
For inventory, CODE 128 is recommended due to its high density and alphanumeric support. Create unique identifiers combining location, category, and item numbers. Use durable materials and appropriate size for warehouse scanning distances. Consider implementing a barcode verification system to ensure quality.
Retail barcodes (EAN/UPC) require GS1 membership for official numbering. For internal use, you can create your own numbering system. QR codes have no legal restrictions. Always verify barcode quality meets industry standards for your specific application to avoid scanning issues and potential compliance problems.
Common issues include low contrast, incorrect size, damaged or smudged codes, insufficient quiet zone, and wrong barcode format. Test with multiple scanners, check lighting conditions, verify print quality, and ensure proper barcode selection for your application. Use barcode verification tools for professional quality assessment.
Yes, QR codes can link to online tracking systems, websites, or databases. For traditional barcodes, you need a compatible scanning system connected to your database. Many inventory management and point-of-sale systems offer barcode tracking capabilities. Consider cloud-based solutions for remote access and real-time updates.
Both are 2D barcodes, but Data Matrix codes are more compact and better for small item marking, while QR codes are faster to scan and more user-friendly for consumer applications. Data Matrix typically stores less data but is more robust in small spaces. QR codes are better for URLs and marketing, Data Matrix for industrial applications.
For multiple products, create a sequential numbering system or use product-specific identifiers. Generate barcodes in bulk using spreadsheet data or specialized software. Ensure consistent formatting and quality across all codes. Test a sample from each batch to verify scanning reliability before full production.
Barcode technology continues evolving with improved 2D codes, enhanced security features, and integration with IoT devices. QR codes are becoming more sophisticated with dynamic content and analytics. Expect increased use of mobile scanning, augmented reality integration, and blockchain for enhanced traceability and security in supply chains.