QR Code Generator
Create professional QR codes in seconds. Support for vCard, WiFi, Email, URLs, and more. 100% private - all processing in your browser.
QR Code Type
Content
⚙️ Customize Appearance (Optional - Click to collapse)
PNG, JPG, SVG up to 2MB
Generate QR Code
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About QR Code Generator
QR (Quick Response) codes are 2D barcodes that encode information in a visual pattern readable by smartphones and barcode scanners. Created in 1994, QR codes have become ubiquitous for marketing, product tracking, event management, and data sharing. This tool generates professional QR codes instantly with customization options and instant download capabilities. Perfect for businesses, marketers, developers, and anyone needing to share data through scannable codes.
Key Features
- Multiple QR Types: Text/URL, vCard (contacts), WiFi credentials, Email, SMS
- Logo Upload: Add your brand logo to QR codes with adjustable size (10-40%)
- Gradient Colors: Linear and radial gradients for eye-catching designs
- Module Patterns: Choose from squares, dots, or rounded shapes
- Vector Downloads: Export as SVG, PDF, or PNG for print and web
- Flexible Sizes: Generate codes from 128x128 to 2048x2048 pixels
- Error Correction: Choose Low (7%), Medium (15%), Quartile (25%), or High (30%)
- Color Customization: Full control over foreground and background colors
- Clipboard Copy: Copy QR code image directly to clipboard
- WiFi QR Codes: Generate scannable WiFi credentials (WPA/WPA2/WEP/Open)
- vCard QR Codes: Create digital business cards with contact info
- 100% Private: All processing happens in your browser—no data uploaded
How We Compare
Compare our QR code generator with other popular tools available online:
| Feature | Our Tool | Competitor A | Competitor B | Competitor C | Competitor D |
|---|---|---|---|---|---|
| Privacy & Security | ✓ 100% client-side Never uploads data |
✓ Client-side | ⚠ Server processing Data uploaded |
✓ Client-side | ⚠ Server-based Cloud storage |
| Logo Upload | ✓ Full support Adjustable size 10-40% |
✓ Available Paid feature |
✗ Not available Premium only |
✗ Not supported | ✓ Paid plans |
| Gradient Backgrounds | ✓ Linear & radial Multiple colors |
✓ Available | ✗ Solid only No gradients |
✗ Not supported | ⚠ Limited Premium only |
| Output Formats | ✓ SVG, PDF, PNG Vector + raster |
⚠ PNG, SVG PDF costs extra |
✗ PNG only | ⚠ PNG, SVG 2 formats |
✓ Multiple formats Paid feature |
| Module Patterns | ✓ 3 patterns Square, dots, rounded |
✓ 5+ patterns | ✗ Square only | ✗ Basic only | ⚠ Limited Premium plans |
| Eye Shapes | ✓ 3 shapes Square, rounded, circle |
✓ Multiple shapes | ✗ Default only | ✗ Not customizable | ⚠ Paid feature |
| vCard QR Codes | ✓ Full support Name, phone, email, etc. |
✓ Available | ✓ Basic vCard | ✓ Available | ✓ Comprehensive |
| WiFi QR Codes | ✓ WPA/WPA2/WEP All security types |
✓ Available | ⚠ WPA2 only | ✓ Full support | ✓ All types |
| Error Correction Levels | ✓ 4 levels L/M/Q/H adjustable |
✓ Adjustable | ✗ Medium only Fixed at M |
⚠ 2 levels L and H only |
✓ All levels |
| Size Options | ✓ 128-2048px 9 preset sizes |
⚠ Up to 1000px Lower limit |
⚠ Up to 500px | ✗ 300px max Small sizes |
✓ Custom sizes Paid plans |
| Transparent Background | ✓ PNG transparency Alpha channel |
✓ Available | ✗ White only | ✓ Supported | ⚠ Premium only |
| Watermarks | ✓ No watermarks 100% clean |
⚠ Small branding Free version |
✗ Watermarked Unless paid |
✓ No watermarks | ✗ Branded Free tier |
| Clipboard Copy | ✓ One-click copy Direct to clipboard |
✗ Not available Download only |
✗ No copy | ✗ Download only | ✗ Not supported |
| Registration Required | ✓ No registration Anonymous use |
✓ Optional | ⚠ Required for features | ✓ No signup | ✗ Required Email needed |
| Dark Mode | ✓ Auto-detect System preference |
✗ Light only | ✗ Not available | ✗ No dark mode | ✗ Light only |
How to Use This Tool
Step 1: Enter Content
- Paste or type the content you want to encode (URL, text, contact info, etc.)
- Content can be up to 4,296 characters
Step 2: Customize (Optional)
- Choose QR code size (128x128, 256x256, or 512x512 pixels)
- Pick colors—click color boxes to customize foreground and background
- Keep high contrast for reliable scanning
Step 3: Generate & Download
- Click "Generate QR Code" to create your code
- Click "Download PNG" to save or "Copy to Clipboard" to use immediately
Pro tip: Always test your QR code with a smartphone camera before distribution to ensure it scans properly.
Common Use Cases
Marketing & Advertising Campaigns
Print QR codes on flyers, billboards, business cards, and packaging to direct customers to websites, promotional pages, or discount coupons. Track engagement by using unique QR codes for each campaign.
WiFi Network Sharing
Generate QR codes for WiFi credentials—guests can scan to connect instantly without typing passwords. Reduce support calls and improve user experience.
Event Management & Ticketing
Create QR codes for event tickets, attendee check-in, or registration links. Scannable codes speed up entry and improve security.
Product Tracking & Inventory
Encode product IDs, serial numbers, or tracking URLs in QR codes for supply chain management, inventory tracking, and authenticity verification.
Tips & Best Practices
- Maintain contrast: Use dark codes on light backgrounds or vice versa. Avoid similar colors
- Size appropriately: Larger codes for distance viewing, smaller for close range. Minimum 2cm x 2cm for reliable scanning
- Test before distribution: Scan with multiple devices to ensure functionality
- Keep data concise: Shorter content = smaller, faster-scanning codes
- Avoid overlays: Don't place logos or images over the timing patterns
- Use HTTPS URLs: Direct to secure websites for maximum trust
Frequently Asked Questions
Q: What error correction levels are available for QR codes?
A: QR codes support four error correction levels: L (7% recovery), M (15% recovery), Q (25% recovery), H (30% recovery). Higher levels can restore more data if the QR code is damaged, faded, or partially obscured, but require more space and are harder to scan. This tool uses Level M (15%) which balances data capacity with robustness for most applications. Choose L for clean, controlled environments. Choose H for outdoor or high-wear applications.
Q: How much data can a QR code hold?
A: QR code capacity depends on version and error correction level. Maximum capacity is ~4,296 alphanumeric characters for numeric data. URLs typically hold 2,000-3,000 characters depending on error correction. QR codes automatically scale to fit data (more data = larger code). Version 1 is smallest, Version 40 is largest (177x177 modules). This tool auto-scales based on content length.
Q: What's the difference between different QR code versions?
A: QR versions (1-40) determine physical size and data capacity. Version 1 is 21x21 modules minimum; Version 40 is 177x177 modules maximum. Higher versions hold more data but create larger codes. Version 1 holds ~41 bytes, Version 40 holds ~4,296 bytes. Scanning speed increases with Version. This tool auto-selects version based on content—you don't need to manually choose.
Q: Does QR code size matter for scanning?
A: Larger QR codes are easier to scan and more forgiving of damage or poor camera quality. Print at least 2cm x 2cm for reliable scanning. Very small codes (<1cm) may fail with smartphone cameras. Screen display requires at least 100x100 pixels. This tool lets you choose sizes (128x128 to 512x512 pixels). Adjust based on usage—larger for outdoor or distance scanning, smaller for tight spaces.
Q: QR codes vs barcodes: what's the difference?
A: Barcodes (1D) store data in vertical lines and hold limited information (~20 characters). QR codes (2D) store data in a grid and hold vastly more information (4,000+ characters). QR codes work at angles while barcodes need to be straight. QR codes provide error correction; barcodes don't. QR codes are cheaper to produce and scan with smartphones. Use barcodes for simple product IDs; use QR codes for complex data, URLs, or WiFi credentials.
Q: Can I customize QR code colors and styling?
A: This tool lets you customize foreground (code) and background colors. Keep high contrast for reliable scanning—avoid light colors on light backgrounds. Black on white is most reliable but any high-contrast combination works. Avoid patterns or gradients which confuse scanners. Never modify the timing patterns (alternating lines). Logo overlays should be minimal and placed carefully.
QR Code Technical Specifications
QR codes use Reed-Solomon error correction to recover damaged data. The format includes version info, format info, timing patterns, alignment patterns, and finder patterns (the three corner squares). The data area holds the encoded content. Higher error correction levels reserve more space for redundancy. All QR codes follow ISO/IEC 18004 standard ensuring universal compatibility with all modern scanners and smartphones.