QR Code Generator - Complete Guide

Create custom QR codes instantly using this free browser-based tool. Generate QR codes for URLs, plain text, email addresses, Wi-Fi logins, contact info (vCards), cryptocurrency payments, and more — all without uploading anything to servers.

How to Use the QR Code Generator

Basic Usage

1. Choose Content Type: Click on the tab for your content (Text, URL, Email, SMS, Wi-Fi, Contact, or Crypto)
2. Enter Information: Fill in the required fields for your selected type
3. Add Logo (Optional): Upload an image to place in the center of your QR code
4. Generate: Click "Generate QR Code" to create your code instantly
5. Download: Save as PNG (for photos/printing) or SVG (for scalable graphics)

Content Type Details

• Text: Plain text messages, notes, or instructions
• URL: Website links - include https:// for external sites
• Email: Pre-filled email with recipient, subject, and message
• SMS: Text message with phone number and pre-written message
• Wi-Fi: Network credentials for easy connection sharing
• Contact: vCard with name, phone, email, and company info
• Crypto: Payment requests for Bitcoin, Ethereum, and other cryptocurrencies

Advanced Customization

Click "Advanced Options" to access:

• Size: 100px to 1000px - larger sizes are better for printing
• Scan Reliability Levels:
  • Basic: Best for clean conditions and fast scanning
  • Standard: Best balance of speed and reliability (recommended)
  • High: Works well with logos, handles minor damage
  • Maximum: Can scan even when 30% of code is damaged or obscured
• Colors: Customize foreground (dark areas) and background colors

Adding Logos and Images

1. Use the "Choose File" button to upload your image
2. Supported formats: JPG, PNG, GIF, WebP
3. Images are automatically resized to 20% of QR code size
4. Set reliability to "High" or "Maximum" when using logos
5. Use high contrast logos for best scanning results

Why Use This Tool?

Our QR Code Generator is ideal for:

• Creating QR codes for marketing materials or product packaging
• Generating vCards for business cards or networking events
• Making scannable links for digital menus, Wi-Fi access, or email subscriptions
• Creating cryptocurrency payment requests with custom amounts
• Adding branded QR codes with your company logo
• Quickly generating text-based codes to share with friends, students, or customers

Frequently Asked Questions (FAQ)

Privacy & Security

Q: Is my data safe?
A: Yes! Everything runs in your browser. No data is sent to servers, stored, or tracked. Your information never leaves your device.

Q: Do QR codes expire?
A: No, QR codes themselves never expire. However, if you encode a URL, that website might go offline.

Compatibility

Q: Will these QR codes work with any scanner?
A: Yes! Our QR codes follow international standards and work with all QR code readers, smartphone cameras, and scanning apps.

Q: What's the maximum amount of data I can encode?
A: Up to 4,296 characters for numbers, 2,953 for letters and numbers, or 1,817 for mixed content including symbols.

Customization

Q: Can I use any colors?
A: Yes, but ensure high contrast between foreground and background. Dark foreground on light background works best.

Q: How big should my logo be?
A: Logos are automatically sized to 20% of the QR code. For best results, use square images with clear, simple designs.

Cryptocurrency

Q: Which cryptocurrencies are supported?
A: Bitcoin, Ethereum, Litecoin, Dogecoin, Bitcoin Cash, and Monero. The QR codes follow standard cryptocurrency URI formats.

Q: Are crypto amounts required?
A: No, amounts and messages are optional. Recipients can modify amounts when scanning.

Troubleshooting

Common Issues

Problem: QR code won't scan

• Ensure high contrast between colors (dark on light works best)
• Try a larger size (300px minimum for printing)
• Use "High" or "Maximum" reliability if you have a logo
• Make sure the QR code isn't blurry or pixelated
• Test with multiple scanner apps

Problem: Logo makes QR code unscannable

• Set reliability to "High" or "Maximum"
• Use a simpler, higher contrast logo
• Try a smaller logo or remove it entirely
• Ensure logo isn't too detailed or busy

Problem: Colors don't work well

• Use dark colors for foreground, light colors for background
• Avoid low contrast combinations (light gray on white)
• Test scanning before final use
• Consider using classic black on white for maximum compatibility

Problem: File won't download

• Check if your browser blocks downloads
• Generate the QR code first, then try downloading
• Try right-clicking the QR code and "Save Image As"
• Clear browser cache and try again

Problem: QR code too large/small for intended use

• Business cards: 100-200px
• Flyers/posters: 300-500px
• Billboards/large displays: 800-1000px
• Digital use: 200-400px

Best Practices

• Test before distributing: Always scan your QR codes with multiple devices
• Use appropriate sizes: Larger codes scan more reliably
• Keep it simple: Shorter URLs and text scan faster
• High contrast: Black on white is most reliable
• Print quality: Use vector (SVG) format for professional printing
• Backup content: Keep a copy of what you encoded

Technical Specifications

• Standards Compliance: ISO/IEC 18004:2015
• Supported Versions: QR Code Model 2, Versions 1-40
• Output Formats: PNG (raster), SVG (vector)
• Color Depth: Full RGB color support
• Maximum Data: 2,953 alphanumeric characters

Why Use This Tool?

Our QR Code Generator is ideal for:

• Creating QR codes for marketing materials or product packaging
• Generating vCards for business cards or networking events
• Making scannable links for digital menus, Wi-Fi access, or email subscriptions
• Creating cryptocurrency payment requests with custom amounts
• Adding branded QR codes with your company logo
• Educational projects and personal use
• Event management and ticketing
• Restaurant menus and contactless ordering

Offline Usage

Works without internet! Once loaded, this tool functions completely offline:

1. Load the page completely
2. Disconnect from the internet
3. The generator continues working perfectly

This is possible because the tool uses modern web technologies to cache everything locally.

Install as Mobile App

Android (Chrome/Edge):

1. Tap the menu (⋮) in the browser
2. Select "Add to Home screen" or "Install app"
3. Confirm installation
4. Access from your home screen like any app

iPhone/iPad (Safari):

1. Tap the Share button
2. Choose "Add to Home Screen"
3. Customize the name if desired
4. Tap "Add" to install

Desktop (Chrome/Edge):

1. Look for the install icon in the address bar
2. Click "Install" when prompted
3. Access from your applications menu

Once installed, you can create QR codes instantly, even without an internet connection!