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Free Barcode Generator Online

100% Free  ·  No Signup  ·  Runs in Your Browser

Create CODE128, EAN-13, UPC, CODE39 and more — instantly, in your browser. Download as PNG or SVG, no signup needed.

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Why Use EkZapp's Barcode Generator

9 Barcode Formats

From retail EAN-13/UPC to logistics CODE128 and ITF-14, all in one tool.

PNG & SVG Export

PNG for quick sharing, SVG for crisp, scalable print-ready labels.

Instant, No Signup

Everything renders live in your browser — no waiting, no account.

How to Generate a Barcode

  1. Type or paste the number/text you want encoded into the data field.
  2. Choose the barcode format that matches your use case — see the comparison table below if you're unsure.
  3. Adjust bar width, height, and color to fit your label size.
  4. Click Generate Barcode to render a live preview.
  5. Download as PNG for digital use or SVG for professional printing.

For EAN-13, you can enter either 12 digits (the checksum digit is calculated automatically) or the full 13 digits. For UPC-A, enter 11 or 12 digits.

Barcode Format Comparison

FormatData typeLengthCommon use
CODE128Letters, numbers, symbolsVariableShipping labels, internal inventory
EAN-13Numeric12–13 digitsRetail products (worldwide)
EAN-8Numeric7–8 digitsSmall retail packaging
UPC-ANumeric11–12 digitsRetail products (US/Canada)
CODE39Letters, numbers, some symbolsVariableAsset tags, ID badges
ITF-14Numeric14 digitsCarton/case shipping
MSINumericVariableWarehouse shelf labeling
PharmacodeNumeric1–6 digitsPharmaceutical packaging

Common Use Cases

Retail & E-commerce

Prototype product packaging with EAN-13 or UPC-A before ordering real GS1-registered codes, or generate internal SKU barcodes for a small shop's own stock system.

Inventory & Warehousing

CODE128 or CODE39 labels for bins, shelves, and asset tags make manual stock-taking faster with any standard barcode scanner app.

Shipping & Logistics

ITF-14 is the standard for case and carton-level shipping, while CODE128 handles long alphanumeric courier tracking numbers.

Events & Attendance

Generate unique CODE128 barcodes per attendee or asset for quick check-in scanning at events or libraries.

Frequently Asked Questions

Is this barcode generator free to use?

Yes, the EkZapp Barcode Generator is completely free with no signup, watermark, or usage limit.

What barcode formats are supported?

CODE128, EAN-13, EAN-8, UPC-A, UPC-E, CODE39, ITF-14, MSI, and Pharmacode are all supported.

Can I use these barcodes for retail products?

EAN-13 and UPC-A barcodes require an officially registered GS1 prefix to be legally scannable at retail checkouts. This tool renders any number you enter for design, prototyping, and internal use, but for real retail sale you must obtain a valid GS1 company prefix first.

Does this barcode generator work offline once loaded?

Yes, barcode rendering happens entirely in your browser using JavaScript. No data is sent to any server, so it keeps working even on a slow connection once the page has loaded.

What is the difference between EAN-13 and CODE128?

EAN-13 is a fixed 13-digit numeric format used worldwide for retail products. CODE128 is a flexible alphanumeric format that can encode letters, numbers, and symbols, commonly used for shipping labels and internal inventory.

Can I download the barcode as SVG for print?

Yes, both PNG (for screens and quick sharing) and SVG (a scalable vector format ideal for professional printing) downloads are available.

Why does EAN-13 reject my input?

EAN-13 requires exactly 12 or 13 digits — the 13th digit is a checksum that this tool calculates automatically if you enter 12 digits. Letters or fewer/more digits will be rejected.

Can I change the barcode size before printing?

Yes, width, height, margin, and font size are all adjustable with live preview, so you can match the exact label size you need.

Is my barcode data stored anywhere?

No. Barcode generation happens locally in your browser and nothing you type is uploaded or saved on EkZapp's servers.

Which barcode type should I use for a courier or shipping label?

CODE128 is the standard choice for shipping and logistics labels because it efficiently encodes long alphanumeric tracking numbers.

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Ekramul Hoque

Founder, EkZapp — building free utility tools for everyday tasks.