Barcode Generator
Create Code 128, EAN-13, UPC, and Code 39 barcodes.
About Barcode Generator
Barcodes provide a universal standard for product identification, supply chain inventory tracking, retail point-of-sale scanning, and warehouse logistics. Whether you are generating European Article Numbers (EAN-13) for commercial products, Universal Product Codes (UPC-A) for American retail shelves, or versatile alphanumeric Code 128 barcodes for parcel delivery labels, having immediate access to a crisp barcode maker is indispensable. Our Barcode Generator renders precise one-dimensional (1D) barcodes directly in your browser. You can fine-tune bar dimensions, toggle text labels, alter color palettes, and export vector graphics or high-resolution images ready for commercial printing.
How to Use Barcode Generator
Input barcode text or digits
Type your product SKU, serial number, tracking code, or numeric digits into the data input field.
Select your target barcode format
Pick from Code 128 for alphanumeric logistics, EAN-13 for global retail, UPC-A for US commerce, or Code 39 for internal asset tracking.
Adjust visual styling and dimensions
Select your desired bar width multiplier, vertical height in pixels, and choose whether to display the human-readable text label underneath.
Inspect real-time preview
Review the live canvas rendering to verify that quiet zones, line widths, and checksum digits conform to scanning standards.
Download or print the label
Click Download PNG for web and raster applications, Download SVG for infinite vector scaling on product packaging, or Print Label for immediate thermal printer output.
Why Use Barcode Generator: Common Use Cases
Retail Product Packaging and Merchandising
Generate official EAN-13 and UPC-A barcodes with automated check digit verification for retail consumer goods, books, and food items.
Warehouse Logistics and Parcel Shipping
Produce high-density Code 128 shipping labels that encode tracking numbers, carrier routes, and fulfillment IDs for barcode scanners.
IT Asset Tagging and Equipment Inventory
Label office computers, server racks, tools, and company hardware using alphanumeric Code 39 stickers for periodic asset audits.
Event Tickets and Badge Authentication
Create unique serial barcodes for concert tickets, membership cards, and conference badges to prevent duplication at venue check-in.
Barcode Generator Specifications
| Input Formats | SKU numbers, Serial identifiers, EAN digits, UPC numbers, Asset tag text |
|---|---|
| Output Formats | High-res PNG image, Scalable vector SVG, Printable label template |
| File Size Limit | No strict limit (dependent on device memory) |
| Processing Engine | 100% Client-side (Runs locally in your browser) |
| Data Retention | Files never leave your device |
| Batch Processing | Single file processing |
Tips for Barcode Generator
Always ensure high contrast between bars and the background; dark bars on a white background provide the highest optical scanner readability.
If you also need two-dimensional matrix codes that store website URLs or Wi-Fi configurations, use our companion QR Code Generator.
To optimize or resize exported barcode image graphics before placing them into packaging artwork, try our Resize Image tool.
Frequently Asked Questions
Which barcode formats are supported by this generator?
The tool supports Code 128 (full ASCII alphanumeric), EAN-13 (13-digit international retail), UPC-A (12-digit North American retail), and Code 39 (uppercase letters, numbers, and symbols).
Does the tool automatically compute check digits for EAN-13 and UPC-A?
Yes. When you enter 12 digits for EAN-13 or 11 digits for UPC-A, the mathematical modulo 10 checksum algorithm computes the final check digit automatically to ensure valid scans.
Why should I download SVG format instead of PNG for packaging?
SVG is an XML-based vector graphic that maintains crisp mathematical lines regardless of print scaling, ensuring high fidelity on industrial commercial printers without pixelation.
Can I print labels directly without saving an image file?
Yes. Clicking the Print Label button opens an isolated print preview window that sends the rendered barcode straight to your connected desktop or thermal label printer.
Is my product inventory or barcode data sent across the internet?
No. All barcode encoding algorithms and canvas rendering execute entirely on your device inside your web browser without transmitting information over external servers.
Are the generated barcodes free to use for commercial products?
Yes. Barcodes created with this tool are completely free for personal and commercial usage without watermarks or royalties.