Generate free, secure QR codes for your cryptocurrency wallet addresses. Create Bitcoin, Ethereum, and custom payment codes directly in your browser. Fast & easy.
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Free Crypto Wallet QR Code Generator Specification
Overview
A high-performance, browser-based utility designed to convert cryptocurrency wallet addresses into scannable QR codes. This tool focuses on simplicity, privacy, and utility for developers, merchants, and individual crypto users.
Core Features
- Multiple Currency Support: Native support for BTC, ETH, LTC, and general custom address encoding.
- BIP-21 Compliant: Ability to append payment parameters (amount, label, message) for supported currencies.
- High-Resolution Export: Export as PNG or SVG with selectable pixel dimensions.
- Error Correction Customization: Toggle between L, M, Q, and H error correction levels for better scannability.
- Visual Styling: Ability to set custom foreground (dark) and background (light) colors.
- Live Preview: Real-time canvas updates as the user types their address or changes settings.
UI/UX Design
- Layout: Split-pane design. Left sidebar containing configuration inputs (Currency, Address, Amount, Colors). Right/Main area displaying the live QR preview and export buttons.
- Aesthetic: Modern, "SaaS" light-mode aesthetic. Use of soft shadows (box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1)), rounded corners (border-radius: 12px), and a clean font stack (Inter or system-sans-serif).
- Animations: Subtle fade-in for the generated QR code. Micro-interactions on buttons (hover scale, active state color shift).
- Responsiveness: Stacking layout for mobile devices; side-by-side on desktop.
Technical Implementation Constraints
- Architecture: Strictly single-file (HTML5, Vanilla CSS3, Vanilla ES6+ JS).
- External Libraries: Use
qrcode.js(via CDN) for generation logic. Tailwind CSS (via CDN) for styling. - Storage: NO
localStorage,sessionStorage, or cookies. State must be handled in memory. - Security: Must run in a sandboxed iframe. No
alert(),confirm(), orprompt(). Use custom floating modal components for user interaction. - Performance: High-efficiency rendering using the
<canvas>element for the QR code.
Color Palette (Light Mode Only)
- Primary Surface:
#FFFFFF(Background) - Primary Accent:
#4F46E5(Indigo-600 for primary buttons/active states) - Secondary Accent:
#F3F4F6(Gray-100 for input backgrounds) - Text/Typography:
#1F2937(Gray-800 for primary text),#6B7280(Gray-500 for secondary text) - Border Color:
#E5E7EB(Gray-200)
User Flow
- Input: User selects currency and pastes their public wallet address into a clear text field.
- Configuration: User modifies payment amount or label (optional). User selects desired error correction level.
- Generation: The app automatically renders the QR code on the canvas.
- Action: User clicks "Download PNG" or "Copy to Clipboard" (using the Clipboard API). No tracking, no external server hits.
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Frequently Asked Questions
Everything you need to know about using this application.
Is this crypto QR code generator safe and private?
Yes, this tool is designed with privacy and security as the top priority. All QR code generation happens entirely within your web browser using client-side JavaScript, meaning your wallet address data never leaves your device or touches an external server. You can safely generate codes for your public addresses without worrying about tracking or data harvesting. Because the application runs locally, it is ideal for creating payment codes for cold wallets or hardware wallets where security is paramount. Since no data is saved to our servers or stored in browser storage (like localStorage), your activity is ephemeral and leaves no trace once you close the browser tab.
Does this tool support BIP-21 standards for payment requests?
Yes, this tool supports the standard BIP-21 URI scheme for Bitcoin, allowing you to encode not just your wallet address, but also payment amounts and transaction labels. This is highly recommended for merchants or individuals who want to ensure the sender uses the correct amount without manual entry errors. For other currencies like Ethereum or Litecoin, the tool generates standardized address links that are compatible with all major crypto wallets. This ensures that when a user scans the code, their mobile wallet app will automatically open with the correct address and details pre-filled, streamlining the payment process significantly.
Can I customize the QR codes created by this generator?
Absolutely. Our generator offers high-level customization options, including selectable error correction levels (L, M, Q, H) to ensure your QR code remains scannable even if printed on textured surfaces or slightly damaged. You can also adjust the foreground and background colors to match your branding or personal aesthetic. Additionally, you can control the output size in pixels to ensure the final image is clear and sharp. Once generated, the tool allows you to save the resulting QR code as a PNG or SVG image directly to your device for easy sharing, printing on invoices, or adding to your website.
Do I need to install any software to use this tool?
No installation is required. This is a pure browser-based utility, meaning it functions in any modern web browser on desktop or mobile devices. As long as you have an active internet connection to load the page, you can generate your crypto QR codes instantly. We do not use any external dependencies that track your usage, and the interface is designed to be fully responsive. Whether you are on a smartphone, tablet, or desktop computer, the layout automatically adjusts to provide an intuitive, seamless experience without the need for additional apps, browser extensions, or plugins.
