Barcode Generator
ConverterGenerate barcodes in 20+ formats: CODE128, EAN13, EAN8, UPC, CODE39, ITF14, MSI, pharmacode and more. Download as PNG or SVG. 100% client-side.
About Barcode Generator
This barcode generator supports over 20 standards including CODE128, EAN-13, EAN-8, UPC-A, CODE39, ITF-14, MSI, pharmacode, and Codabar. CODE128 supports full ASCII (0-127), EAN-13 uses 13 digits with GS1 modulo-10 checksum, UPC-A is the 12-digit retail code. Generation is powered by JsBarcode locally, outputting PNG or SVG with customizable bar width, height, margins, and colors.
How to Use
- Open the Barcode Generator tool page
- Enter or paste your data into the input area
- View the real-time results and use the copy button to get the output
Use Cases
- Retail product barcodes — Generate EAN-13 or UPC-A barcodes for retail products for packaging printing and checkout scanning.
- Inventory management labels — Use CODE128 to generate alphanumeric inventory barcodes for warehouse scan-in and scan-out.
- Logistics tracking codes — Generate ITF-14 logistics case barcodes for supply chain shipping carton identification and tracking.
- Pharmaceutical codes — Generate pharmacode barcodes for pharmaceutical packaging identification and compliance labeling.
- Event check-in codes — Use CODE39 to generate participant number barcodes for quick scan-based check-in and verification.
FAQ
How is the EAN-13 checksum calculated?
It uses the GS1 modulo-10 weighted algorithm: multiply odd positions by 1 and even positions by 3, sum them, then subtract the units digit from 10. The tool auto-calculates and appends it.
What is the difference between CODE128 and CODE39?
CODE128 supports the full ASCII set with higher density, suited for long data; CODE39 supports only 43 characters (uppercase, digits, some symbols) but is simpler and widely compatible.
Can it export SVG vector format?
Yes. The tool outputs both PNG bitmaps and SVG vectors; SVG scales losslessly and is ideal for print layout.
Can generated barcodes be read by scanners?
Yes. Generated barcodes comply with each standard specification and are readable by mainstream laser scanners and phone cameras when bar width and height are set adequately.
Is my data uploaded?
No. All barcode generation runs locally via JsBarcode with no network requests, safe for sensitive codes.
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