What is the difference between a QR code and a barcode?

A barcode (1D) encodes data horizontally in a series of parallel lines and stores up to a few dozen characters. A QR code (2D) encodes data in a matrix pattern and can store hundreds of characters including URLs and full text.

How do I make a QR code for a Wi-Fi network?

Select the Wi-Fi option in the QR Code Generator, enter the network name (SSID), password, and security type (WPA/WEP/none). When scanned, the device automatically connects to the network.

What barcode format does retail use?

Most retail products use EAN-13 (13 digits, global standard) or UPC-A (12 digits, primarily US and Canada). Ensure your product has an official GS1 barcode number before printing for retail use.

Generate QR Codes & Barcodes Online

QR codes and barcodes are essential for bridging physical materials with digital content and for tracking products in retail and logistics. devtoolkit.sh makes it easy to generate both. The QR Code Generator creates QR codes for any content — URLs, Wi-Fi network credentials, contact cards, phone numbers, and plain text — with customisable size and colour options. For retail and logistics applications, the Barcode Generator produces standard 1D formats including Code 128, EAN-13, UPC-A, and Code 39. Both tools output print-ready SVG or PNG images directly in your browser without any account or API key.

[#]QR Code Generator

Generate a scannable QR code from any text or URL and download as PNG.

|||Barcode Generator

Generate Code 128 barcodes from text and download as PNG.

FAQ

What is the difference between a QR code and a barcode?: A barcode (1D) encodes data horizontally in a series of parallel lines and stores up to a few dozen characters. A QR code (2D) encodes data in a matrix pattern and can store hundreds of characters including URLs and full text.
How do I make a QR code for a Wi-Fi network?: Select the Wi-Fi option in the QR Code Generator, enter the network name (SSID), password, and security type (WPA/WEP/none). When scanned, the device automatically connects to the network.
What barcode format does retail use?: Most retail products use EAN-13 (13 digits, global standard) or UPC-A (12 digits, primarily US and Canada). Ensure your product has an official GS1 barcode number before printing for retail use.