The Barcode Generator turns any text or number into a scannable Code 128 barcode that you can download as a PNG image. Type your value, choose whether to show the text underneath, and download the barcode for labels, inventory, or documents.
The barcode is generated entirely in your browser — nothing is uploaded — so it’s fast and private.
How to generate a barcode
- Type the text or number you want to encode.
- Choose whether to show the human-readable text below the bars.
- Check the preview updates live.
- Click Download PNG to save the barcode image.
About Code 128
Code 128 is a compact, high-density barcode that can encode all standard ASCII characters — letters, digits, and common symbols — which makes it one of the most widely used barcode formats for shipping, inventory, and product labels.
This generator uses Code 128 (Code B) and automatically adds the required checksum, so the barcode scans correctly on standard readers.
Tips for scannable barcodes
- Keep enough white space (a “quiet zone”) around the barcode — the download includes it.
- Print at a size large enough for your scanner; very small barcodes can fail to read.
- Avoid resizing the PNG in a way that blurs the bars.
- Stick to standard characters; unusual symbols may not be supported.
Frequently Asked Questions
What barcode format does this use?
It generates Code 128 barcodes, which support letters, numbers, and common symbols and are widely used for labels and inventory.
Can I encode letters and numbers?
Yes. Code 128 encodes standard ASCII characters, so both text and numbers work.
What format is the download?
The barcode downloads as a PNG image, ready to place in documents or print onto labels.
Is my data uploaded?
No. The barcode is created entirely in your browser and nothing is sent to a server.