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Create Code 128 barcodes with custom colors & sizing.
Barcode Generator is a free browser-based tool that helps you create code 128 barcodes with custom colors & sizing. It is part of ToolsMonk's business tools collection, so you can finish the job without downloading software, creating an account, or jumping between multiple websites.
This tool is especially useful for workflows such as creating barcodes for products, inventory, or labels, generating a barcode for a sku or item number, and printing barcodes for stock management. Because it runs directly in your browser, you can use it on desktop, tablet, or mobile while keeping the process fast and easy for one-off tasks as well as repeat work.
Barcode Generator is designed for people who want a practical, privacy-friendly workflow with instant results inside the larger ToolsMonk library.
Enter the data to encode (e.g. a product number)
Choose the barcode format
Generate and preview the barcode
Download the image for printing or use
Generates barcodes from your data
Supports common barcode formats
Download a print-ready barcode image
Runs in your browser — your data is never uploaded
Clean output with no watermark
Free, with no signup
Creating barcodes for products, inventory, or labels
Generating a barcode for a SKU or item number
Printing barcodes for stock management
Producing barcodes for packaging or assets
Barcode Generator is a powerful free online tool available on ToolsMonk that helps you create code 128 barcodes with custom colors & sizing. Whether you're a professional, student, or casual user, our barcode generator provides instant, accurate results right in your browser without requiring any software installation or account creation.
As part of our Business Tools collection, this tool is designed with simplicity and power in mind. All processing happens client-side, ensuring your data remains completely private and secure. The tool works seamlessly across all modern browsers on desktop, tablet, and mobile devices.
Barcode Generator creates scannable barcodes from your data in common formats, with a print-ready image download — for products, inventory, labels, and asset tracking.
It helps to know when a barcode (versus a QR code) is right: a traditional 1D barcode encodes a short number read by laser scanners, perfect for product SKUs and inventory, whereas a QR code holds richer data like URLs and is read by cameras. For item numbers and stock, the barcode is the tool; for links and text, the QR Code Generator fits better.
Format and registration matter for retail. EAN/UPC barcodes used in shops require numbers registered through GS1 to be valid commercially, while internal uses (your own inventory, labels, assets) can encode any code with formats like Code 128 or Code 39. So the image is free to generate here; a registered retail number is a separate step.
For reliable scanning, print at adequate size with strong black-on-white contrast and a clear margin, and test-scan before a big run. Generation runs in your browser with nothing uploaded and no watermark. Pair it with the QR Code Generator and other ToolsMonk business tools.
Use Code 128/39 for internal inventory codes; EAN/UPC (registered via GS1) for retail products
Print with good contrast and a clear margin, and always test-scan before a print run
Need to encode a URL or richer data? Use the QR Code Generator instead
Common questions about this tool, its workflow, and what to expect before you use it.
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