QR Code Generator

A QR code generator is software or an online service that outputs a QR code image when you enter data such as a URL, text, contact information, or Wi-Fi settings. It is offered in many forms, including free tools that run in the browser, desktop applications, command-line tools, APIs, and platforms for businesses.

The criteria for choosing a generator differ depending on the use. For personal use or generating a small number of codes, a free online tool is enough. Just entering a URL in the browser generates a QR code, which you can download as PNG or SVG. For marketing uses, paid platforms equipped with dynamic QR codes, access analytics, design customization, and team management features are suitable.

For developers, APIs and libraries are provided. To generate QR codes automatically from your own system, you either call a REST API or build in a library such as Python (qrcode), JavaScript (qrcode-generator), or Java (ZXing). The approach of generating codes in the browser with JavaScript alone needs no communication with a server, which makes a privacy-conscious design possible.

From a security standpoint, there is a risk that the data you enter into a free QR code generator is stored / collected on its server. When generating a QR code that contains confidential information, you should choose a tool that works offline, or a trustworthy service with a clear privacy policy.