無料バーコード作成 — Code 128, EAN-13, UPCバーコード生成 | Cruse
Code 128、JAN/EAN-13、UPC-Aなどの主要規格に対応したオンラインバーコード生成ツール。高画質SVG/PNG出力。
ツールの使い方
Choose Symbology Format
Select Code 128 (general logistics & warehouse inventory), EAN-13 (international retail), UPC-A (North American retail), or Code 39.
Input Barcode Digits or Text
Type your product code or SKU. For EAN-13 and UPC-A, entering 12 or 11 digits automatically computes the official Modulo-10 check digit.
Adjust Bar Width & Height
Customize the bar thickness, vertical height, human-readable text toggle, font size, and foreground/background colors.
Export Vector SVG or Print Sticker Sheet
Download a clean vector SVG for packaging design software (Illustrator, CorelDraw), save high-res PNGs, or print directly on label paper.
技術仕様・標準規格
| Parameter / Standard | Specification |
|---|---|
| Supported 1D Symbologies | CODE 128 (A/B/C Auto), EAN-13, UPC-A, CODE 39, ITF-14, Codabar |
| Checksum Calculation | Automatic Modulo-10 check digit generation for EAN-13, UPC-A, and ITF-14 |
| Export Formats | Scalable Vector SVG, High-Res PNG (1200px), Clipboard Copy, Print Sheet |
| Customization Limits | Bar width 1x–4x, bar height 40–160px, text font size 10–20px, full hex color control |
| Printing Compatibility | Zebra, Brother, Dymo, standard thermal label printers, and laser/inkjet A4 sheets |
| Privacy & Security | 100% Client-Side. No SKUs, serial numbers, or inventory IDs are sent to external servers. |
よくある質問
What is the difference between Code 128 and EAN-13?
Code 128 is an alphanumeric barcode capable of encoding any ASCII character (letters, numbers, and symbols). It is universally used in shipping, supply chain logistics, Amazon FBA cartons, and internal asset tracking. EAN-13 is a strictly numeric 13-digit barcode standardized by GS1 for consumer retail products scanned at supermarket and store point-of-sale (POS) registers worldwide.
How is the 13th check digit of an EAN-13 calculated?
The check digit uses a Modulo-10 algorithm. Starting from the right, alternating digits are multiplied by 3 and 1, summed together, and subtracted from the next multiple of 10. Our barcode generator automatically computes and appends the check digit if you only enter the first 12 digits.
Can I print these barcodes on thermal label printers?
Yes! Vector SVG and high-resolution PNG exports are specifically optimized for thermal transfer and direct thermal printers (such as Zebra ZD421, Brother QL series, and Dymo LabelWriter), ensuring crisp edges that scan reliably with laser and optical barcode scanners.
What is the UPC-A barcode format?
UPC-A (Universal Product Code) is the standard 12-digit retail barcode used primarily in the United States and Canada. An EAN-13 barcode is actually a superset of UPC-A (a UPC-A can be converted to EAN-13 simply by adding a leading zero).
Why does my barcode scanner fail to read printed barcodes?
The most common causes of scanning failure are: (1) inadequate "quiet zone" margins on the left and right of the bars, (2) printing at low resolution causing fuzzy bar edges, (3) poor color contrast (e.g. red bars or dark background), or (4) resizing the barcode image non-proportionally in Word or Canva.