Barcode Generator
Generate Code 128, EAN-13, UPC, Code 39 and more barcode types. Single or bulk generation with label printing support.
Barcode Settings
Preview
Enter content to generate barcode
Barcode Format Guide
What is a Barcode?
A barcode is a machine-readable representation of data using parallel lines (bars) of varying widths and spacings. Barcodes are used worldwide for product identification, inventory management, asset tracking, shipping, and more. When scanned by a barcode reader, the pattern is decoded back into the original data.
Different barcode formats (symbologies) are designed for specific use cases. Retail products use EAN or UPC barcodes, while logistics and warehousing prefer Code 128 or Code 39 for their flexibility in encoding alphanumeric data.
Supported Barcode Formats:
Code 128
The most versatile format — encodes all 128 ASCII characters. Ideal for shipping labels, inventory systems, and any general-purpose barcode needs.
EAN-13
International standard for retail products (13 digits). Used on products sold in stores worldwide. Includes a check digit for scanning accuracy.
UPC-A
Standard barcode for retail products in the US and Canada (12 digits). Similar to EAN-13 but used primarily in North American markets.
Code 39
Popular in industrial and government applications. Supports uppercase letters, digits, and some special characters. Self-checking format.
EAN-8
Compact version of EAN-13 (8 digits). Used on small products where space is limited, such as candy bars or small electronics.
ITF-14
Used for packaging and shipping cartons (14 digits). Designed to be printed on corrugated cardboard and scanned reliably even on rough surfaces.
How to Use This Barcode Generator
Single Barcode:
- Select a barcode format (Code 128 is recommended for general use)
- Enter the text or number you want to encode
- For EAN/UPC formats, use the "Auto-add" button to append the check digit
- Adjust bar width, height, colours, and font size as needed
- Download as PNG, JPG, or SVG — or copy to clipboard
- Use "Print Labels" to create label sheets for Avery or custom layouts
Bulk Generation:
- Switch to "Bulk Generate" mode
- Enter values manually (one per line), use the sequence generator, or import from Excel/CSV
- Click "Generate All Barcodes" to create all at once
- Download all as a ZIP file or print label sheets
Pro Tip:
Use the Sequence Generator to create sequential barcodes like PROD-001 to PROD-500 instantly. Set a prefix, start/end numbers, and padding — no need to type each value manually.
Common Use Cases
Retail & E-commerce
Create EAN-13 or UPC barcodes for product packaging, pricing labels, and POS systems.
Inventory & Warehousing
Track stock with Code 128 or Code 39 barcodes. Bulk generate for large inventories.
Shipping & Logistics
Generate ITF-14 barcodes for shipping cartons or Code 128 for tracking labels.
Asset Tagging
Label office equipment, IT assets, or library books. Print on Avery label sheets.
Pharmaceutical
Use Pharmacode for pharmaceutical packaging as per industry standards.
Documents & Tickets
Add barcodes to event tickets, invoices, or membership cards for quick scanning.
Frequently Asked Questions
What barcode formats does this generator support?
Our generator supports 8 barcode formats: Code 128 (general purpose), EAN-13 (international retail), EAN-8 (small products), UPC-A (US/Canada retail), Code 39 (industrial), ITF-14 (packaging), MSI (inventory), and Pharmacode (pharmaceutical). Code 128 is the most versatile and works for any text or number.
What is a check digit and do I need to calculate it?
A check digit is the last digit of a barcode (like EAN-13 or UPC) used to verify scanning accuracy. Our tool auto-calculates it for you — just enter the data digits (e.g., 12 digits for EAN-13) and click "Auto-add" to append the correct check digit.
Can I generate barcodes in bulk?
Yes! Switch to "Bulk Generate" mode to create hundreds of barcodes at once. You can enter values manually (one per line), use the sequence generator for sequential codes (e.g., PROD-001 to PROD-100), or import values directly from an Excel or CSV file. All barcodes can be downloaded as a ZIP file.
How do I print barcode labels on Avery sheets?
After generating your barcode, click "Print Labels" to open the label configuration panel. Choose from presets like Avery 5160 (30 labels/sheet), Avery 5163 (10/sheet), or Avery 5167 (80/sheet). You can also set custom dimensions, gaps, and margins. Set the number of copies per barcode and click "Print Label Sheet" to get a perfectly aligned print layout.
What image formats can I download barcodes in?
You can download barcodes in three formats: PNG (best for general use and web), JPG (smaller file size with white background), and SVG (vector format, scales to any size without quality loss — ideal for print). You can also copy the barcode to clipboard directly.
Which barcode format should I use for my products?
For retail products sold internationally, use EAN-13. For US/Canada retail, use UPC-A. For small items with limited space, use EAN-8. For internal inventory or warehousing, Code 128 or Code 39 are ideal. For shipping cartons, use ITF-14. Pharmacode is used exclusively in the pharmaceutical industry.
Can I customise the barcode appearance?
Yes, you can customise bar width, height, font size, bar colour, and background colour. You can also add custom label text below the barcode or hide the text entirely. All settings apply to both single and bulk generation modes.
Is this barcode generator free to use?
Yes, our barcode generator is completely free with no limits on usage. Generate single barcodes or thousands in bulk, download in any format, and print label sheets — all without signup or watermarks. Everything runs in your browser, so your data stays private.