Barcode Generator

Generate and verify EAN-13, UPC-A, and EAN-8 codes; inspect weighted check-digit math, render the real 95- or 67-module SVG, and export it locally.

E-COMMERCE & PRICING · LOCAL WORKBENCH · BROWSER WORKSPACE

Build a preview you can inspect.

Generate and verify EAN-13, UPC-A, and EAN-8 codes; inspect weighted check-digit math, render the real 95- or 67-module SVG, and export it locally.

01 · BUILD OR VERIFY A RETAIL CODECHECK DIGIT + REAL SYMBOL

Barcode formatDigits · add the last digit to verify

LOAD A KNOWN EXAMPLE

Bar height · 80px Print the human-readable digits underneath

A check digit catches most common misreads.The final digit is calculated from the preceding digits. Changing one digit always changes the weighted sum; swapping adjacent digits that differ by five is the known blind spot.

02 · LIVE SVG BARCODE95 MODULES

Check digit generatedThe weighted sum 89 rounds up to 90; check digit 1 completes 4006381333931.

CHECK DIGIT1

FULL NUMBER4006381333931

BAR WIDTH95modules

GS1 PREFIX HINTGermany

03 · CHECK-DIGIT ARITHMETICALTERNATING ×1 / ×3

POSITIONDIGITWEIGHTPRODUCT

014× 14

020× 30

030× 10

046× 318

053× 13

068× 324

071× 11

083× 39

093× 13

103× 39

119× 19

123× 39

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Runs in this browser. Results are estimates or editing cues. Review the assumptions and source-specific limits before using them in a consequential decision.

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How this app works

Generate and verify EAN-13, UPC-A, and EAN-8 codes; inspect weighted check-digit math, render the real 95- or 67-module SVG, and export it locally. Results update as you adjust inputs and stay in this browser.