Barcode Generator
Generate Code 128 and Code 39 barcodes for free. Customize bar width, height, and download as PNG.
Code 128 supports all ASCII characters and is widely used in logistics. Code 39 supports uppercase letters, numbers, and some special characters.
Why Use Barcode Generator?
Barcodes are essential for inventory management, product labeling, shipping, and point-of-sale systems. Our generator creates high-quality, scannable barcodes in popular formats like Code 128 and Code 39, ready for printing or digital use.
Frequently Asked Questions
What's the difference between Code 128 and Code 39?
Code 128 is more compact and supports the full ASCII character set, making it ideal for shipping and logistics. Code 39 is simpler, supports alphanumeric characters, and is widely used in manufacturing.
Can I use these barcodes commercially?
Yes, the barcodes generated are free to use for any purpose, including commercial applications.
What resolution should I use for printing?
For best scanning results, use a bar width of at least 2-3 pixels and ensure your printer outputs at 300 DPI or higher.
Why won't my barcode scan?
Ensure adequate contrast, sufficient size (at least 0.5" height), and clean printing. Test with multiple scanner apps if needed.
What characters can I encode?
Code 128 supports all ASCII characters (letters, numbers, symbols). Code 39 supports uppercase A-Z, 0-9, and some special characters (-, ., $, /, +, %, space).