Customization
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What is QR Code Generator?
QR Code Generator is a free online tool that instantly generates QR codes from any text, URL, or JSON input. Designed for developers, QA testers, and technical users who need quick QR code encoding without signing up or using a backend service. All processing happens entirely in your browser — your data never leaves your device.
How to use
1. Type or paste your content (URL, text, or JSON) into the input area. 2. The QR code is generated instantly — no button needed. 3. Customize the size, colors, and error correction level. 4. Download the QR code as PNG or SVG.
Features
- Instant generation — QR code updates in real-time as you type.
- Auto-detect input type — automatically identifies URLs, JSON, and plain text.
- Customizable — adjust size (200/300/500px), foreground/background colors, and error correction level.
- Download — export as PNG or SVG for use in projects, documentation, or presentations.
- 100% client-side — your data never leaves the browser. No API calls, no tracking.
Use Cases
- Share URLs in documentation or presentations.
- Test QR code scanning in mobile applications.
- Encode configuration data, API endpoints, or WiFi credentials.
- Quick prototyping and debugging workflows.
Privacy
This tool runs entirely in your browser. No data is sent to any server, stored, or tracked. Your input is processed locally using JavaScript and discarded when you close the page.