Free Online Barcode Generator

Free Barcode Generator FAQ

1. What is the Free Barcode Generator?

The Free Barcode Generator is an open-source online code generator tool that allows users to easily create various formats of one-dimensional barcodes. This free online generator supports multiple encoding types and enables users to generate barcodes in real-time and in bulk, completely free of charge.

2. How do I use this online barcode generator?

Using our free barcode generator is very simple:

Enter the content you want to encode in the input box of the online generator, with each line corresponding to one barcode.
Use the tabs in the free online generator to switch between different encoding types (such as Code128, EAN / UPC, Code39, ITF, MSI Plessey, Pharmacode, Codabar).
Select the encoding format and barcode style in the options section of the online code generator.
The free online generator system will automatically generate the corresponding barcode in real-time.

3. What types of barcodes does this free barcode generator support?

Our online tool supports various common barcode formats, including:

Code128 (including Code128A, Code128B, Code128C, GS1-128)
EAN / UPC (including EAN-13, EAN-8, EAN-5, EAN-2, UPC-A, UPC-E)
Code39 (including Code39, Code39 Extended)
ITF (including ITF-14)
MSI Plessey (including Mod 10, Mod 11, Mod 1010, Mod 1110)
Pharmacode
Codabar
GS1 DataBar (including Omnidirectional, Limited, Expanded, Stacked)
Publishing (including ISBN, ISMN, ISSN)

The free online generator also supports 2D barcode formats, including:

QR Code
Data Matrix
PDF417
Aztec Code

4. Can I generate multiple barcodes at once with this free online generator?

Yes, this free online generator supports bulk generation. You just need to enter one barcode content per line in the input box of the generator, and the system will generate a corresponding barcode for each line. For bulk-generated barcodes, you can click the "Start Scrolling" button in the bottom right corner of the free online generator, and the page will automatically scroll to display all generated barcodes. You can also use the settings button below in the free online generator to adjust the scrolling rate.

5. Can I customize the style of barcodes in this free online generator?

Yes. In the options section of our free online barcode generator, you can adjust the following parameters:

Encoding format
Whether to display text (Yes/No)
Barcode length (mm)
Barcode height (mm)
Custom display text: when "Show Text" is enabled, you can set custom text shown below each barcode. After the barcode value, press the Tab key and type your caption (e.g. 1234567890\t1234 567 890). Each line in bulk mode can have its own caption. You can also paste two columns directly from Excel — they are automatically Tab-separated.

6. How do I download or save the barcodes from this free online generator?

You can download or save barcodes from our free online generator in the following ways:

Click the download button above the output box in the online generator to choose to download as PNG, JPG, GIF, or SVG format.
If only one barcode image is generated by the free online generator, it will be downloaded directly.
If multiple barcode images are generated by the online generator, the system will package all images into a ZIP file for download.

7. Can I get links to the barcodes created by this free online generator?

Use the "Link to This Page" button to copy a shareable page URL. The link keeps the selected barcode type and input data in the data parameter.

Example: https://barcode-maker.com/Code128?data=ABC-abc-1234

Share this page link when you want someone else to reopen the generator with the same barcode value.

8. Are the barcodes generated by this free generator legally valid?

The barcodes generated by our free online tool are technically accurate, but whether they have legal validity depends on your intended use and relevant regulations. If you need to use them for commercial purposes, we recommend consulting relevant industry standards and legal requirements.

9. What's the quality of the barcodes from this free generator? Are they suitable for printing?

The barcodes generated by our free online tool have high-quality resolution and are fully suitable for printing. However, we recommend conducting small-scale tests before formal large-scale use to ensure they can be scanned and recognized normally in your specific application scenarios.

10. Can I use this free barcode generator on mobile devices?

Yes, our free online barcode generator is web-based and compatible with various devices. Whether you're using a computer, tablet, or smartphone, you can easily access and use this online tool.