Standards-aware input
EAN, UPC, and ITF values receive GTIN check-digit validation. Code 39 and Code 128 use clear character and length rules.
All tools
Developer tool · Scan ready
Barcode Generator
Create standards-aware barcodes with live validation, vector and PNG downloads, and printable A4 label sheets.
Generated privately in your browser
Live output
Code 128 preview
FORMAT
Code 128
VALUE
TOOLKIT-2026-001
OUTPUT
Vector SVG · High-res PNG
Print sheet
Repeat labels on A4
Choose a count and layout, then use your browser print dialog.
Print at 100% or Actual size. Avoid Fit to page if labels must meet exact scanner dimensions.
How it works
A scan-ready barcode in three steps.
Start with the system that will consume the code. Format validation and check digits help prevent common data-entry mistakes before a label reaches print.
- 01
Choose the standard
Select Code 128, EAN-13, EAN-8, UPC-A, ITF-14, Code 39, or QR for the system that will scan it.
- 02
Enter and validate
Add the value. Retail check digits are calculated or verified automatically before rendering.
- 03
Export or print
Download crisp SVG, a high-resolution PNG, or repeat the barcode across an A4 label sheet.
Built for real labels
Correct inputs and practical exports.
Production-friendly output
SVG stays sharp at any size, PNG is rendered at high resolution, and quiet-zone, text, colour, and height controls remain explicit.
Private, instant rendering
Barcode generation happens entirely in your browser. Values are not uploaded, logged, saved, or sent to a third-party API.
Barcode questions
Standards, check digits, sizing, and printing.
Which barcode type should I choose?+
Code 128 is a flexible default for inventory and logistics. EAN-13, EAN-8, and UPC-A are retail standards; ITF-14 is used on shipping cartons; Code 39 remains common for industrial assets. Use QR for links or longer free text.
Does the generator calculate check digits?+
Yes. Enter 12 digits for EAN-13, 7 for EAN-8, 11 for UPC-A, or 13 for ITF-14 and the final digit is added. If you include it, Toolkit verifies it.
Should I download SVG or PNG?+
Use SVG for professional layouts, printing, or later resizing. PNG is convenient for documents and apps that do not accept vector graphics.
Why does quiet-zone space matter?+
Scanners need blank space around a barcode to distinguish its first and last modules from surrounding artwork. Avoid cropping this area.
Can I use these barcodes on retail products?+
The image can encode a valid number, but it does not issue or register a GTIN. Obtain retail identifiers from the authorized GS1 organization for your market.
Are barcode values stored?+
No. Rendering and downloads happen locally in your browser, and the current value is discarded when the page closes or refreshes.
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