QR Code Generator
Generate clean, high-resolution QR codes directly in your browser. Supports website links, Wi-Fi network credentials, plain text, and phone numbers with instant PNG download.
1. Enter QR Content & Data
2. Frame & Banner Style
3. Colors, Gradients & Background
4. Modules Pattern & Corner Eye Styles
5. Center Logo & Branding
https://khmertools.com
Static QR Code: Never expires, 100% private client-side processing.
About & How It Works
Technical calculation logic, standards, and operational details
The QR Code Generator creates high-resolution, static Quick Response codes entirely within your browser using the qrcode.js library, supporting four content types optimized for the most common QR use cases: URL/website links, plain text, Wi-Fi network credentials (SSID + password + security type), and phone numbers (tel: URI scheme). QR codes were invented by Denso Wave in Japan in 1994 and are defined by ISO/IEC 18004:2015. They encode data in a 2D matrix of black and white modules across versions 1–40 (21×21 to 177×177 modules), with four error correction levels (L 7%, M 15%, Q 25%, H 30%) allowing partial damage recovery. Cambodian businesses widely use QR codes for contactless payment (KHQR standard via NBC), restaurant menus, social media links, and event check-in systems.
Algorithmic Logic & Calculation
The generator encodes the input data into the QR matrix using Reed-Solomon error correction coding. The error correction level (L, M, Q, H) determines redundancy: Level H allows up to 30% of the QR module pattern to be damaged while remaining scannable. The module size controls the pixel density of the rendered canvas. For Wi-Fi QR codes, the tool constructs the MECARD-format string: WIFI:S:<SSID>;T:<WPA/WEP/nopass>;P:<password>;H:<hidden>;;. The rendered QR code is exported as a PNG image using canvas.toDataURL('image/png').
QR Code generation complies with ISO/IEC 18004:2015 (QR Code bar code symbology specification). Wi-Fi QR format follows the MECARD Wi-Fi Network Configuration specification. Error correction uses Reed-Solomon coding.
Key Features & Capabilities
Four QR Content Types
Generate QR codes for URLs, plain text, Wi-Fi credentials, and phone numbers.
Configurable Error Correction Level
Select L (7%), M (15%), Q (25%), or H (30%) redundancy for damaged or partially covered QR codes.
High-Resolution PNG Download
Download the generated QR code as a high-resolution PNG image ready for print and digital use.
Static QR — No Expiry, No Tracking
All QR codes are static with data embedded directly — they never expire and do not route through any redirect service.
Practical Real-World Use Cases
Restaurant & Café Digital Menus
Phnom Penh restaurants place QR codes on tables linking to Google Drive PDF menus, allowing contactless ordering during and after COVID-19.
Event & Conference Check-In
Event organizers generate unique URL QR codes for attendee registration links, enabling fast mobile check-in scanning at venue entry points.
Wi-Fi Sharing in Offices & Guesthouses
Hotels, guesthouses, and coworking spaces in Cambodia create Wi-Fi QR codes so guests can connect without typing passwords.
How to Use
- Choose data type (URL, Plain Text, Wi-Fi, Phone).
- Fill in the content.
- Adjust size or error correction level if needed.
- Download the QR code image as PNG.
Client-Side Security Guide: Why In-Browser Tools Protect Your Sensitive Data
Learn how modern WebAssembly and JavaScript enable private, 100% in-browser utilities that guarantee zero data leakage, ideal for API keys, JSON payloads, and sensitive tokens.
Frequently Asked Questions
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