Bytelify

Barcode Generator

Generate a scannable barcode in CODE128, EAN13, UPC, and more formats, live as you type.

Runs in your browser, nothing sent
barcode-generator

Generated entirely in your browser. Each format has its own rules for allowed length and characters — EAN13 needs exactly 12-13 digits, UPC needs 11-12, and so on.

Need the opposite? QR Code Generator

What is Barcode Generator?

Type a value, pick a format (CODE128, CODE39, EAN13, EAN8, UPC, ITF14, MSI, or Pharmacode), and get a scannable barcode instantly. Download it as a PNG for labels, inventory, or testing a barcode scanner. Each format has its own rules for allowed length and characters. EAN13, for example, needs exactly 12-13 digits. If your input doesn't fit the format you picked, the tool tells you why instead of generating a broken code. Everything runs in your browser, and nothing you type is sent anywhere.

How to Use the Barcode Generator

  1. 1

    Choose a Format: Pick CODE128, CODE39, EAN13, EAN8, UPC, ITF14, MSI, or Pharmacode.

  2. 2

    Type the Value: Enter the text or digits to encode, matching that format's rules.

  3. 3

    Preview the Barcode: The scannable barcode updates automatically as you type.

  4. 4

    Download the PNG: Click download to save the barcode for a label or print mockup.

How It Works

Each format encodes your text as a pattern of bars and spaces according to its own published standard. CODE128 and CODE39 can encode arbitrary text and are common in shipping and logistics, while EAN13, EAN8, and UPC are the fixed-digit-count standards used on retail packaging and include a built-in check digit the tool calculates for you. Pharmacode and ITF14 follow their own respective industry conventions. The barcode is rendered directly in your browser as soon as you type, then exported as a PNG when you download it. Nothing you enter is sent to a server.

Common Use Cases

  • Printing test labels for a warehouse or inventory system before real SKUs are assigned.

  • Testing a barcode scanner app or POS integration against a known input, including edge cases like an invalid EAN13 length.

  • Prototyping product packaging mockups that need a realistic-looking barcode without waiting on real product codes.

FAQs

Frequently Asked Questions

Common questions about Barcode Generator.

CODE128 is the most flexible (any character, any length) and a safe default for general use. EAN13/UPC are the standards used on retail products and require an exact digit count. CODE39 is common in logistics and inventory systems.

Formats like EAN13, EAN8, and UPC are strict about digit count (EAN13 needs 12-13 digits, UPC needs 11-12). If your value doesn't match, switch format or adjust the value's length.

Yes, as a PNG file, ready to paste into a document or print.

EAN-13 (13 digits, 12 data digits plus a check digit) is the international retail standard; UPC-A (12 digits, 11 data digits plus a check digit) is its North American counterpart. A UPC-A code is actually a valid EAN-13 code with a leading 0 added.

Yes, Bytelify's Barcode Generator is free with no account or sign-up required.

No. The barcode is rendered entirely client-side in your browser, so nothing you type is sent anywhere.