Barcode Generator (CODE128, EAN, UPC)
Create retail, industrial, and logistics 1D barcodes instantly in Code 128, EAN-13, UPC-A, Code 39, and ITF formats with PNG and SVG vector export.
Supports all ASCII characters
What is Barcode Generator (CODE128, EAN, UPC)?
The Barcode Generator creates standard 1D linear barcodes for retail, inventory management, logistics, and product packaging. It supports major symbologies including CODE128, EAN-13, UPC-A, CODE39, and ITF-14, with automated modulo checksum calculation, custom bar height/width adjustments, and instant SVG/PNG exports.
Designed for accuracy, speed, and privacy, this tool runs entirely on your local device with zero network latency.
How to Use the Barcode Generator (CODE128, EAN, UPC)
- 1Select your target barcode symbology (e.g., CODE128, EAN-13, UPC-A, CODE39, or ITF-14).
- 2Type or paste your numeric or alphanumeric product code into the value input field.
- 3Customize barcode dimensions, bar height, bar width multiplier, and toggle human-readable text display.
- 4Download your generated barcode as a crisp SVG vector file or standard PNG image.
Formula & Calculation Logic
Encodes numeric and ASCII characters into standard binary bar-and-space patterns with ISO/IEC compliant start/stop delimiters and modulo checksums.
EAN_13_Checksum = (10 - ((Sum(Odd_Pos) + 3 * Sum(Even_Pos)) % 10)) % 10Barcode Generator (CODE128, EAN, UPC) Frequently Asked Questions
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