QR Code Generator
Generate QR codes for text, URLs, and more
Click to upload center icon
Enter content to generate QR code
Online QR Code Generator
Create custom QR codes instantly for free. QR codes (Quick Response codes) are versatile 2D barcodes that can store URLs, text, contact info, and more. They bridge the gap between physical and digital worlds. Our generator allows you to create high-resolution QR codes with custom logos, error correction levels, and sizes. Perfect for business cards, marketing materials, restaurant menus, and WiFi sharing.
Features
- Generate QR codes for URLs, Text, Email, Phone, and WiFi
- Add custom center logo/image
- Adjust size and error correction level
- Download as high-quality PNG
- No expiration date on generated codes
How to Use
- 1Select the type of content (e.g., URL, Text, WiFi).
- 2Enter your content in the input field.
- 3Customize settings like size and error correction.
- 4Optionally upload a logo to place in the center.
- 5Download your QR code image.
Frequently Asked Questions
Complete QR Code Generator Guide
QR Code Generator is a free online tool for creating custom QR codes. Supports generating various QR codes for URLs, text, email, phone, WiFi, etc., with customizable size, error correction level, and center icon. Whether for business cards, posters, product packaging, restaurant menus, or event promotion, you can easily create professional QR codes. The tool is completely free, generated QR codes never expire, supports HD download. Understanding how to use the QR code generator helps you connect online and offline, improve user experience, and expand brand influence.
1如何使用 / How to Use
Step 1: Choose Content Type
Choose the type of QR code to generate based on needs. Website URL: Enter full URL (like https://example.com). Text: Enter any text content. Email: Use mailto:email@example.com format. Phone: Use tel:+1234567890 format. WiFi: Use specific format WIFI:T:WPA;S:NetworkName;P:Password;;. Click quick templates to auto-fill formats.
Step 2: Enter Content
Enter the content to encode in the text box. Can be URL, text, contact info, etc. QR code generates in real-time and displays on the right. Longer content makes QR code more complex. Recommend using URL shortener for long URLs. Supports Chinese, English, numbers, symbols, and various characters.
Step 3: Customize Settings
Adjust QR code size (128x128 to 1024x1024). Select error correction level: Low (7%) for clear environments, Medium (15%) is default recommended, High (30%) for adding center icons or potentially damaged scenarios. Higher error correction makes QR code more complex but more fault-tolerant.
Step 4: Add Center Icon (Optional)
Upload logo or icon as QR code center decoration. Supports PNG, JPG, SVG, etc. Icon automatically adjusts to 20% of QR code size with white background for readability. Recommend using simple, high-contrast icons. After adding icon, need to use higher error correction level (Q or H).
Step 5: Download QR Code
Click download button to save QR code as PNG image. Image is in HD format, suitable for printing and digital media. Downloaded QR code is static, never expires, works as long as content is valid. Can be used on various materials: business cards, posters, product packaging, websites, etc.
2实际应用场景 / Use Cases
1Business Cards and Contact Info
Add QR code on business cards, scan to directly save contact info. Can include name, phone, email, company, position, etc. Using vCard format can import all info to contacts at once. More convenient than traditional cards, won't lose, easy to share. Add company logo as center icon to enhance brand recognition.
2Website and Social Media Promotion
Generate QR codes for website or social media links for offline promotion. Place on posters, flyers, billboards, product packaging, users scan to visit. Track scan data to understand promotion effectiveness. Using URL shortener can change target URL without regenerating QR code. Suitable for event promotion, product launch, store traffic.
3Restaurant Menus and Ordering
Restaurants can generate menu QR codes, place on tables for customers to scan and view. Contactless menus became standard after pandemic. Can link to online menu, ordering system, payment page. Update menu by just changing webpage, no need to reprint. Saves cost, eco-friendly, easy to update. Can also add restaurant logo to enhance brand image.
4WiFi Password Sharing
Generate WiFi QR code, guests scan to automatically connect to network without manually entering password. Suitable for coffee shops, hotels, offices, homes, etc. Use format: WIFI:T:WPA;S:NetworkName;P:Password;;. Print and post in visible location for guest convenience. Improves user experience, reduces hassle of asking for password.
5Product Packaging and Manuals
Add QR code on product packaging, link to product details, instructions, video tutorials, after-sales service, etc. Users scan to get more info, no need to print thick manuals. Saves cost, eco-friendly, easy to update info. Can also be used for anti-counterfeiting verification, product traceability, user feedback collection, etc.
6Event Check-in and Ticketing
Generate event ticket QR codes for check-in verification. Each ticket has unique QR code, scan to confirm identity and entry. Suitable for conferences, exhibitions, performances, training, etc. Can integrate with electronic ticketing system, real-time attendance statistics. More eco-friendly, efficient, harder to counterfeit than traditional paper tickets.
使用技巧与最佳实践 / Tips & Best Practices
Choose Appropriate Size
QR code size depends on use scenario. Business cards, product packaging: 256x256 or 512x512. Posters, billboards: 512x512 or 1024x1024. Web display: 256x256 is sufficient. Ensure adequate resolution when printing (at least 300 DPI). Too small QR codes are hard to scan at distance or in low light. Recommend testing scan effect before mass printing.
Understanding Error Correction Levels
Error correction level determines QR code fault tolerance. L (7%): Simplest, for clear environments. M (15%): Default recommended, balances complexity and fault tolerance. Q (25%): Suitable for adding small icons. H (30%): Highest fault tolerance, for adding large icons or potentially damaged scenarios. Higher error correction makes QR code more complex and dense. If not adding center icon, M level is sufficient.
Optimize Content Length
Longer content makes QR code more complex and harder to scan. Suggestions: Use URL shortener (like bit.ly) to shorten long URLs. Avoid unnecessary parameters and info. Keep text content concise. If content too long, consider using dynamic QR code (requires third-party service). Test scan effect, ensure normal recognition at target distance and devices.
Tips for Adding Center Icon
Center icon can enhance brand recognition, but note: 1) Use simple, high-contrast icons; 2) Icon should not be too complex, avoid affecting scanning; 3) Choose higher error correction level (Q or H); 4) Icon occupies about 20% of QR code area; 5) Test scan effect, ensure recognition on various devices. Recommend using company logo, brand identity, etc.
Testing and Verification
Must test after generating QR code: 1) Scan with various devices (iPhone, Android); 2) Test under different lighting conditions; 3) Test scan effect at different distances; 4) Verify link redirects correctly; 5) Check if content displays completely. Print samples for testing before mass printing. Adjust size, error correction level, or content if issues found.
常见问题 / Frequently Asked Questions
技术说明 / Technical Details
This tool uses QR Server API to generate QR codes and Canvas technology in browser to add center icons. **Core Features**: 1. Supports multiple content types (URL, text, email, phone, WiFi) 2. Adjustable size (128x128 to 1024x1024) 3. Four error correction levels (L, M, Q, H) 4. Custom center icon (PNG, JPG, SVG) 5. Real-time preview and generation 6. HD PNG download **Technical Implementation**: - Uses QR Server API to generate base QR code - Canvas API draws center icon - Icon auto-scales to 20% of QR code - Adds white background for readability - Supports cross-origin image processing - Real-time input change monitoring, auto-updates **QR Code Specifications**: - Version: Auto-select (based on content length) - Encoding: UTF-8 - Format: PNG - Color: Black and white (standard) **Error Correction Capability**: - L level: Can recover 7% damage - M level: Can recover 15% damage - Q level: Can recover 25% damage - H level: Can recover 30% damage **Privacy Protection**: Uses third-party API to generate base QR code, center icon processing done locally. Does not store any user data or generated QR codes. Fully protects your privacy. **Tech Stack**: Next.js + React + TypeScript + Canvas API + QR Server API, ensuring high quality and performance.
🔒 隐私保护承诺 / Privacy Protection
所有处理都在您的浏览器本地完成，数据不会上传到任何服务器。您的隐私和数据安全是我们的首要任务。
All processing is done locally in your browser. No data is uploaded to any server. Your privacy and data security are our top priorities.