Barcode generator

What it does

Validate and render Code 128 and EAN-13 barcodes, then download SVG or PNG assets.

How to use it

1. Choose Code 128 or EAN-13 and enter one code per line, up to 50 codes.
2. EAN-13 accepts 12 digits or validates 13 digits. Code 128 accepts 1–80 printable ASCII characters per code.
3. Download individual SVG/PNG assets and the batch validation JSON. Invalid rows are reported without discarding valid rows.

Example

EAN-13 input 590123412345 becomes 5901234123457 after calculating the check digit.

Methodology

EAN-13 uses the alternating 1/3 weighted checksum. bwip-js renders standard Code 128 and EAN-13 symbols with white background, quiet margins and human-readable text.

Limitations

Code 128 supports printable ASCII only in this tool. Valid EAN checksums do not establish assigned product identifiers. Test final printed size and contrast with a scanner.

Automation

This tool runs in your browser. No upload API or MCP endpoint is available.