QR Code Generator Professional QR Code Tools

Advanced QR code generator and scanner with extensive customization options. Create QR codes with multiple sizes, error correction levels, and various data types. Built-in scanner with camera support for reading QR codes. Perfect for mobile apps, documentation, and data sharing workflows.

📱 Multiple Sizes

🛡️ Error Correction

📸 Built-in Scanner

📥 Download DevHelper 👀 See Features

DevHelper QR Code Generator Screenshot showing QR code creation with customization options

Advanced QR Code Features

Everything you need for professional QR code generation and scanning.

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Multiple Size Options

Generate QR codes in various sizes from small icons to large banners. Perfect for different use cases from business cards to outdoor signage.

🛡️

Error Correction Levels

Choose from Low, Medium, Quartile, and High error correction levels. Ensure QR codes remain scannable even when partially damaged or obscured.

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Built-in Scanner

Scan QR codes directly with your Mac's camera. Instantly decode URLs, text, contact information, and other data types from existing QR codes.

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Multiple Data Types

Create QR codes for URLs, plain text, contact information, email addresses, phone numbers, WiFi credentials, and custom data formats.

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Export & Save

Export QR codes as high-quality PNG images in various resolutions. Perfect for print materials, web use, and digital documentation.

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Real-time Generation

Instant QR code generation as you type. See your QR code update in real-time with immediate visual feedback and validation.

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Visual Preview

Clear, high-contrast QR code preview with grid guidelines. Verify readability and appearance before saving or sharing.

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Batch Processing

Generate multiple QR codes efficiently for bulk operations, inventory management, or large-scale deployments.

How to Use QR Code Generator

Create professional QR codes in just a few simple steps.

Enter Your Data

Input the text, URL, or information you want to encode. DevHelper supports various data types including contact info and WiFi credentials.

Choose Settings

Select the QR code size and error correction level based on your intended use case and environmental conditions.

Preview & Test

View the generated QR code in real-time. Use the built-in scanner to test readability and ensure proper encoding.

Export & Use

Save your QR code as a high-quality PNG image or copy it to the clipboard for immediate use in documents and applications.

Perfect for These Development Tasks

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Mobile App Development

Generate QR codes for app downloads, deep linking, user onboarding, and feature activation workflows in mobile applications.

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Web Development

Create QR codes for sharing URLs, API endpoints, demo links, and providing quick access to web applications and services.

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Documentation & Testing

Add QR codes to technical documentation, test reports, and deployment guides for easy access to resources and additional information.

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Authentication & Security

Generate QR codes for 2FA setup, API keys, configuration data, and secure credential sharing in development environments.

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DevOps & Deployment

Create QR codes for server URLs, deployment links, monitoring dashboards, and quick access to infrastructure resources.

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Marketing & Analytics

Generate trackable QR codes for campaign URLs, user acquisition, A/B testing, and conversion tracking in marketing automation.

Frequently Asked Questions

What data types can I encode in QR codes?

DevHelper supports all standard QR code data types including plain text, URLs, email addresses, phone numbers, SMS messages, WiFi credentials, contact information (vCard), and custom data formats.

What are error correction levels and which should I choose?

Error correction allows QR codes to remain readable even when damaged. Low (7%) for clean environments, Medium (15%) for general use, Quartile (25%) for outdoor use, and High (30%) for harsh conditions or small print sizes.

What sizes are available for QR codes?

DevHelper generates QR codes in multiple sizes suitable for different applications: small (for business cards), medium (for flyers), large (for posters), and extra large (for banners and outdoor signage).

Can I scan QR codes with DevHelper?

Yes! DevHelper includes a built-in QR code scanner that uses your Mac's camera to decode QR codes instantly. Perfect for testing your generated codes or reading existing ones.

What image formats can I export?

QR codes can be exported as high-quality PNG images in various resolutions. PNG format ensures crisp, scalable images perfect for both digital use and print materials.

Are the generated QR codes compatible with all scanners?

Yes, DevHelper generates standard QR codes following ISO/IEC 18004 specifications, ensuring compatibility with all QR code scanners and mobile camera apps.