QR Code Generator

The QR Code Generator creates high-quality QR codes for URLs, plain text, Wi-Fi credentials, vCards (business cards), email, phone numbers, SMS messages, and calendar events. Generated QR codes are scannable by every modern smartphone camera (iOS and Android), Google Lens, dedicated QR apps, and every barcode reader on the market. Download as PNG (any resolution up to 4K) or SVG (infinite scalability, print-ready) with customizable colors, error correction, and optional logo overlay in the center. Every QR code is generated entirely in your browser — your data (including sensitive Wi-Fi passwords and vCard contact info) is never uploaded anywhere.

QR codes have exploded back into mainstream use since 2020. Restaurant menus, payment apps, event ticketing, product authentication, marketing campaigns, Wi-Fi sharing, COVID vaccination certificates, and contactless networking all rely on QR codes. Most generators either add watermarks, require sign-up, track your data, or force you to pay for basic features like SVG export. This tool gives you professional-quality QR codes instantly — free, private, unlimited, no account needed. Pair it with our specialized QR tools: Wi-Fi QR Generator, vCard QR Generator, and Bulk QR Generator for specific use cases.

A QR code (Quick Response code, ISO/IEC 18004) is a 2D matrix barcode invented by Denso Wave in 1994. Originally designed for inventory tracking in Toyota factories, QR codes are now universal. Each code is a grid of black and white cells encoding data with aggressive error correction.

QR code structure:

- Finder patterns — three large squares in the corners for orientation detection.
- Timing patterns — alternating dark/light cells that help scanners determine cell size.
- Version indicators — for QR codes version 7+ (size 45×45 cells and up).
- Format information — encodes the error correction level and mask pattern.
- Data and error correction codewords — the actual payload, encoded using Reed-Solomon error correction.

Versions (sizes):

Version 1 is 21×21 cells (smallest). Version 40 is 177×177 cells (largest). This tool automatically picks the smallest version that can hold your data.

Error correction levels:

| Level | Recovery | Use case |
|---|---|---|
| L (Low) | ~7% | Indoor use, clean print. Smallest code. |
| M (Medium) | ~15% | General purpose (default). |
| Q (Quartile) | ~25% | Outdoor, heavily branded codes with logos. |
| H (High) | ~30% | Codes with large logo overlays, industrial use, damaged surfaces. |

Higher levels mean the code can still be read even with part obscured — but the code becomes physically larger (more cells). For QR codes with logos, use Q or H so the logo covers damaged areas.

Supported data modes:

- URL — https://... (most common)
- Plain text — any UTF-8 string
- Wi-Fi — WIFI:T:WPA;S:SSID;P:password;; format, auto-connects on scan
- vCard — v2.1 or v3.0 format, saves contact to phone address book
- Email — mailto:user@example.com?subject=...&body=...
- Phone — tel:+1234567890
- SMS — sms:+1234567890?body=message
- Geographic — geo:lat,lng?q=query
- Calendar event — BEGIN:VEVENT\\n...\\nEND:VEVENT format

Data capacity at version 40 (max), error correction L:

- Numeric: 7,089 characters
- Alphanumeric: 4,296 characters
- Binary: 2,953 bytes
- Kanji: 1,817 characters

Output formats:

- PNG — raster image, fine for digital use. Choose any resolution; 512×512 is common. Transparent background optional.
- SVG — vector, infinite scalability. Best for print and high-DPI displays. Smallest file size.
- PDF — for direct printing, embed in documents.

Static vs dynamic QR codes:

This tool generates static QR codes — the data is encoded directly in the image and cannot be changed after printing. For dynamic codes (where you can change the destination URL after the QR is printed), you need a QR management service with a redirect URL. Dynamic codes also enable scan analytics.

Static QR vs Dynamic QR: Static QRs encode data directly — data cannot be changed after printing. Dynamic QRs encode a redirect URL that you can change any time. Static is free; dynamic requires a QR management service (Bitly, QR Code Generator, Beaconstac). Use static for simple URLs and contact info; dynamic for marketing campaigns and anything you may change.

QR code vs Barcode: QR is 2D (encodes data in 2 dimensions) — holds much more data than 1D barcodes. Barcodes (UPC, Code 128, Code 39) are still standard for products in retail and shipping. QR codes are better for marketing and URL sharing.

QR code vs NFC: NFC (tap-to-connect) is hardware-based — requires NFC-enabled phone and an NFC tag. QR is camera-based — works on any smartphone with a camera. QR has wider compatibility and zero cost per tag. NFC offers a smoother user experience when available.

QR code vs Short URL: Short URLs (bit.ly, tinyurl.com) work as text that users type. QR codes work with camera scanning. Both redirect to the same destination. Best combined: use a short URL as the QR payload for smaller QR codes.

QR code vs Google Lens / Visual Search: Google Lens can identify products, landmarks, text from images — QR is a specific format that encodes text data. Lens is for search; QR is for sharing specific data.

QR code standards: This tool uses the ISO/IEC 18004 standard — the universal QR specification. Micro QR (smaller variant for tiny labels) and Frame QR (with design frames) are less common variants; not supported here.