Creating a barcode for a product or shipment usually means using desktop software or an API. The Barcode Generator does it in the browser: enter digits (or text for supported formats), choose format (Code128, EAN-13, UPC-A, etc.), and download as PNG or SVG—no sign-up; generation can be done client-side so your data is not stored.
Barcode Generator supports Code128, Code39, EAN-13, EAN-8, UPC-A, UPC-E, ITF-14, and more. Use EAN-13/UPC-A for retail products, Code128 for shipping and inventory, Code39 for industrial use. Input depends on format: numeric digits only for most; length and allowed characters depend on the format (e.g. EAN-13 needs 13 digits). Generation can be done client-side so your numbers are not stored; check the tool implementation. Use it for product labels, inventory, shipping, or any system that expects a specific barcode format.
Key Features
- Formats — Code128, Code39, EAN-13, EAN-8, UPC-A, UPC-E, ITF-14, and more. Choose the format that matches your system.
- Which format to use — EAN-13/UPC-A for retail products, Code128 for shipping and inventory, Code39 for industrial use.
- Input rules — Numeric digits only for most; length and allowed characters depend on the format (e.g. EAN-13 needs 13 digits). The tool may compute check digits for you.
- Output — Download as PNG or SVG. Use on labels, packaging, or in systems.
- Privacy — Generation can be done client-side. Your numbers are not stored; check the tool implementation.
- No account — Use as often as you need without sign-up.
How to Use the Barcode Generator
- Open the Barcode Generator tool.
- Choose format (e.g. Code128, EAN-13). Enter the required digits (and length). View the barcode.
- Download as PNG or SVG. Use the "Use tool" button on the docs page if you are reading this from the documentation.
Real Use Cases
- Product labels — EAN-13 or UPC-A for retail. Generate from product ID or SKU. Print on labels.
- Inventory — Code128 or Code39 for internal IDs. Scan at receiving or picking.
- Shipping — Generate barcodes for tracking or shipping labels. Match carrier or warehouse format.
- Libraries and assets — Code39 or Code128 for asset tags. Print and scan for check-in/out.
- Events — Tickets or badges with barcode. Encode ticket ID for scanning at entry.
- Testing — Generate sample barcodes for POS or scanner testing. Ensure format and check digit are correct.
Why Use the Barcode Generator Instead of Alternatives?
- vs. QR Code Generator — QR Code Generator creates 2D QR codes for URLs and rich content. Barcodes are 1D and typically numeric. Use barcodes for product/shipping codes; use QR for links and complex data.
- vs. UUID Generator — UUID Generator creates unique IDs. This tool creates a scannable barcode image from given digits. Different purpose.
- vs. Random Number Generator — Random Number Generator generates random numbers. This tool turns a number into a barcode image. Use both: generate a number, then create a barcode for it if needed.
- vs. Desktop software — No install. Works in the browser. Client-side when implemented.
Each format has rules (e.g. check digit, length). Ensure the input matches the format; the tool may compute check digits for you. If your barcode is invalid, check format rules.
Benefits for Retail, Warehousing, and Developers
- Retail — Product and price barcodes. EAN-13/UPC-A for POS.
- Warehousing — Internal barcodes for inventory. Code128 or Code39.
- Developers — Test barcode scanning or integration. Generate valid samples.
Common Mistakes
- Barcode invalid — Each format has rules (e.g. check digit, length). Ensure the input matches the format; the tool may compute check digits for you.
- Wrong format — Use EAN-13 for retail in many regions; Code128 for alphanumeric or shipping. Check what your scanner or system expects.
- Wrong length — EAN-13 needs 13 digits; UPC-A needs 12. Add leading zeros or use the right format.
- Forgetting to download — The image is not saved automatically. Download before closing the tab.
Frequently Asked Questions
Code128, Code39, EAN-13, EAN-8, UPC-A, UPC-E, ITF-14, and more.
EAN-13/UPC-A for retail products, Code128 for shipping and inventory, Code39 for industrial use.
Numeric digits only for most; length and allowed characters depend on the format (e.g. EAN-13 needs 13 digits).
Is my data sent to a server?
Generation can be done client-side. Your numbers are not stored; check the tool implementation.
When should I use a barcode generator?
Use it for product labels, inventory, shipping, or any system that expects a specific barcode format.
Why is my barcode invalid?
Each format has rules (e.g. check digit, length). Ensure the input matches the format; the tool may compute check digits for you.
Barcode Generator gives you a barcode in seconds: choose format, enter digits, download. No account; client-side generation when available. For QR codes use QR Code Generator, for unique IDs use UUID Generator, and for random numbers use Random Number Generator.
Use the Barcode Generator tool to create barcodes.