⚡ QR Code Generator

Create, customize, and download high-resolution QR codes instantly — 100% free, no signup, no watermarks.

🔗 URL / Text 📱 WiFi login 📇 vCard contact 💬 SMS / Email

📝 Enter data (text, URL, WiFi config, etc.)

💡 Supports any UTF-8 text: website URLs, plain messages, contact info, event tickets, etc.

📐 QR Size (pixels)

🛡️ Error Correction

Higher correction → more robust, but slightly denser QR.

🔲 Your QR code preview

Scan with any camera app or QR reader.

📌 QR Code Generator Online – Fast, Free & Reliable

Our QR Code Generator helps you create scannable QR codes for any purpose: website links, Wi-Fi authentication, business cards, app downloads, payment links, event check-ins, and more. No software installation, no watermarks, and every QR code is generated directly inside your browser – your data never leaves your device.

QR (Quick Response) codes store information in a two-dimensional matrix of black and white squares. Modern smartphones can scan them instantly. Our generator uses the industry‑standard QRCode.js library, producing high-quality, printable QR codes with adjustable size and error correction.

🧠 How QR Code Generation Works

Every QR code consists of position markers, timing patterns, and encoded data. When you enter text/URL, our tool:

Converts your input into a binary data stream.
Adds error correction codewords (based on selected level: L/M/Q/H).
Maps bits into a matrix with finder patterns and alignment blocks.
Renders final canvas preview – ready to scan and share.

🚀 Popular Use Cases

Website / landing page – drive traffic from print or digital media.
Wi-Fi credentials – format: WIFI:T:WPA;S:MySSID;P:password;;
vCard (digital business card) – BEGIN:VCARD\nVERSION:3.0\nFN:John Doe\nTEL:12345\nEND:VCARD
App download links (Google Play / App Store).
Event check-in & tickets – encode unique IDs.

📖 QR Code Examples & Conversion Guide

Content Type	Example Input	Typical Usage
Website URL	`https://ratpdf.com/tools`	Print ads, posters, email signatures
Plain Text	`Hello, scan this secret message!`	Product info, museum guides
Wi-Fi Login	`WIFI:T:WPA;S:HomeNetwork;P:securePass123;;`	Guest Wi-Fi access
Phone Number	`tel:+1234567890`	Click-to-call QR code
SMS Message	`smsto:+1234567890:Hello%20from%20QR`	Marketing campaigns

🔢 QR Code Data Capacity & Error Correction

QR codes can store up to ~4,296 alphanumeric characters or ~2,953 bytes (binary). Higher error correction (H level) makes the code readable even if 30% is damaged, but reduces capacity. Our generator automatically adjusts encoding based on your input length. Use the size selector to make scanning easier in different environments.

🎯 Pro tip: Testing & printing

After generating your QR, always scan it with multiple devices before printing. For best results, use medium (M) correction and keep at least 0.5cm quiet zone around the QR image.

❓ Frequently Asked Questions

Yes, 100% free. No hidden costs, no watermarks, no registration. You can generate unlimited QR codes and download them as PNG files. All processing is done client‑side.

This tool generates static QR codes that encode the exact data you enter. For editable destinations, we recommend using a URL shortener with a redirect (e.g., you can change the destination behind a short link, then generate a QR code for that short link).

Absolutely. vCard: paste a standard vCard 3.0/4.0 text. For calendar events (iCalendar), use format: BEGIN:VEVENT\nSUMMARY:Meeting\nDTSTART:20250602T090000\nEND:VEVENT. The raw text will be encoded and smartphones will recognize it.