QR Code Generator
QR Code Generator is a free web tool that converts URLs, text, email addresses, phone numbers, and WiFi information into scannable QR codes. Features include logo embedding, color customization, gradient support, and export to PNG/SVG/JPEG formats.
What You Can Do
The QR Code Generator is a completely free tool to instantly create QR code images from URLs and text. Perfect for sharing Wi-Fi settings and printing on business cards or flyers. All processing is done in your browser, so no data is transmitted externally.
- Support for Various Input Types: URL, text, email, phone number, SMS, Wi-Fi settings
- Advanced Customization: Foreground, background, gradients, and 6 dot styles including rounded
- Error Correction: 4 error correction levels (L/M/Q/H) for damage resistance
- Logo Embedding: Place your logo in the center for branding
No registration required, browser-based. Create customizable QR codes with logo embedding and gradient support for free.
Enter Content
0 characters
Quick Input:
🖼️ Logo Embedding
Upload Logo Image
Logo Size
Recommended: 20-30%. Too large may affect readability.
Generated Result
Enter content in the left form
and click "Generate QR Code" button
Use Cases
- Share website URLs - Print QR codes on business cards or flyers for easy access
- Event check-in - Manage participant information and tickets with QR codes
- Share Wi-Fi passwords - Easy connection without typing long passwords
- Exchange contact information - Instantly register email addresses or phone numbers on smartphones
- Display product information - Provide links to detailed pages via QR codes
How to Use
Basic Usage
Enter a URL or text and click "Generate QR Code" to create your QR code. You can download the generated QR code in PNG, SVG, or JPEG format.
Input Types
- URL: Enter a website address. Scanning opens the browser.
- Text: Enter any text. Share messages or information.
- Email: Enter an email address. Scanning launches the email app.
- Phone: Enter a phone number. Scanning opens the dialer.
- SMS: Enter phone number and message. Scanning launches the SMS app. Format: sms:+11234567890?body=Message
- Wi-Fi: Enter Wi-Fi information. Scanning enables auto-connection. Format: WIFI:T:WPA;S:NetworkName;P:Password;;
Customization Features
- Foreground/Background Colors: Customize QR code colors. Match brand colors or enhance design aesthetics.
- PNG/SVG/JPEG Save: Choose the file format based on your needs. SVG does not degrade when scaled up.
- Logo Embedding: Place a logo image in the center. Recommended with error correction level H for up to 30% damage tolerance.
- Gradient: Create impressive QR codes with linear or radial gradients.
About Error Correction Levels
This feature allows QR codes to be read even if they are dirty or partially damaged. Higher levels provide stronger restoration but make the QR code more complex.
- Low (L): Recovers up to 7% - Simple QR code
- Medium (M): Recovers up to 15% - Recommended setting
- High (Q): Recovers up to 25% - For outdoor use
- Highest (H): Recovers up to 30% - Recommended for logo embedding
Application Scenarios
- Website redirection (business cards, flyers, posters)
- Wi-Fi password sharing
- Event information distribution
- Product information links
- Contact information exchange
- Social media account links
About Security
All data entered in this tool is processed within your browser and never transmitted to servers. Use with confidence.
What is a QR Code?
QR Code (Quick Response Code) is a 2D barcode developed by Denso Wave in 1994 and standardized as international standard ISO/IEC 18004. It can store up to approximately 7,000 characters and enables high-speed reading from any 360° angle. Today, it is used in various fields including payment systems, inventory management, and marketing.
Error Correction Mechanism
QR codes are equipped with "Reed-Solomon code" error correction, allowing them to be read correctly even if parts are dirty or damaged. This tool offers 4 error correction levels (L/M/Q/H), with level H capable of handling up to 30% damage.
- Level L (approx. 7% recovery): Optimal for printed materials or short-term indoor use
- Level M (approx. 15% recovery): Recommended for general purposes (default)
- Level Q (approx. 25% recovery): For outdoor or long-term display printed materials
- Level H (approx. 30% recovery): For logo embedding or harsh environments
Color Selection Considerations
The contrast between foreground and background colors greatly affects QR code readability. WCAG (Web Content Accessibility Guidelines) recommends a contrast ratio of 4.5:1 or higher. This tool allows direct color code input to create QR codes matching your brand colors.
Recommended combinations: Black (#000000) foreground + White (#FFFFFF) background, Navy (#003366) foreground + White background, Dark Green (#006400) foreground + White background. Avoid light colors or highly saturated color combinations.
Choosing Between PNG, SVG, and JPEG Formats
PNG format is a bitmap image, ideal for websites or social media posts. SVG format is a vector image that does not degrade when scaled, recommended for large posters or signboards. JPEG format has smaller file sizes, convenient for email attachments.
Logo Embedding Best Practices
When embedding a logo in a QR code, use error correction level H (30%) to ensure readability even with the logo covering part of the code. Keep the logo size to 20-30% of the QR code area.
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