Barcode Generator - Free Online Tool

Generate barcodes in your browser for free. Supports Code 128, EAN-13, UPC-A, Code 39, and more. Export as PDF, PNG, or SVG. No uploads, works offline.

Related Tools: Code Generators

Barcode Type

Select a type to see allowed characters and length.

Output Format

Values (one per line; commas/semicolons also supported)

Preview uses the first valid value for the selected type.

DPI

Spec-safe quiet zone (recommended)

Auto quiet (~10% of shorter side)

Manual quiet (inches)

Show metric (mm) in size list

Sync PNG/SVG size to label size

PDF Size (Roll Labels)

PNG/SVG Dimensions

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Frequently Asked Questions

Yes, the barcode generator is 100% free with no limits on usage or downloads.

The tool supports Code 128, EAN-13, EAN-8, UPC-A, Code 39, ITF, MSI, and Pharmacode formats.

Paste codes line by line or separated by commas/semicolons; duplicates are removed and you can download all at once as a ZIP.

The quiet zone is the blank space around a barcode required for scanners to read correctly; you can set spec-safe, auto, or manual sizes.

Yes, choose PNG or SVG for digital use and PDF for label printers, with proper DPI and size options.

Yes, barcodes are optimized for Zebra, Brother, and other thermal printers at 203/300 DPI using black on white labels.

You can generate barcodes for internal use, but for retail GS1 codes you must obtain an official prefix from GS1.

In the print dialog select Actual size or 100%, turn off Fit to page, Shrink, or Scale, and choose the exact custom label size with no margins.

If scanning fails, increase quiet zones, confirm DPI matches, use a matte white label, and prefer Code 128 for mixed text and digits.

Yes, exported SVG preserves proportions and can be imported into design apps if you maintain aspect ratio during resizing.