QR Code Generator

QR codes (Quick Response codes) are two-dimensional barcodes that store information as black and white squares arranged in a grid pattern. When scanned with a smartphone camera or QR reader app, the encoded data is instantly decoded and acted upon—opening URLs, connecting to WiFi, or displaying contact information.



This generator uses advanced QR encoding algorithms to convert your input (text, URL, WiFi credentials, etc.) into a scannable QR code image. The tool supports four error correction levels: Low (7% damage recovery), Medium (15%), Quartile (25%), and High (30%). Higher error correction allows QR codes to remain scannable even if partially damaged or obscured, though it increases the code's complexity and size.



All QR code generation happens locally in your browser using JavaScript. Your data is never transmitted to servers, ensuring privacy when encoding sensitive information like WiFi passwords or private URLs. The generated PNG images can be downloaded and used anywhere—websites, business cards, product packaging, or marketing materials.

1. URL Shortening & Marketing
Replace long, unwieldy URLs with scannable QR codes on print materials, posters, and packaging. A QR code linking to your product page, event registration, or promotional offer converts physical touchpoints into digital engagement. Track scans using URL shorteners to measure campaign effectiveness.



2. WiFi Network Sharing
Eliminate the hassle of typing complex WiFi passwords. Generate a QR code containing your network credentials (SSID, password, encryption type). Guests simply scan the code to connect instantly. Perfect for offices, cafes, Airbnbs, or home networks with secure 20+ character passwords.



3. Contact Information (vCard)
Business cards with QR codes allow recipients to save your contact details with one scan—no manual typing. Encode name, phone, email, company, and website in a vCard format QR code. More reliable and modern than manually entering information from printed cards.



4. Restaurant Menus & Contactless Ordering
Post-pandemic, many restaurants use QR codes for contactless menu access. Place a QR code on tables linking to a digital menu, reducing printing costs and enabling instant updates. Add ordering functionality to convert QR scans directly into sales.



5. Authentication & Two-Factor Setup
Many 2FA apps (Google Authenticator, Authy) use QR codes to configure accounts. The QR code contains a secret key that synchronizes the app with your account. This eliminates manual key entry and reduces setup errors for secure authentication systems.

• Test before printing: Always scan your QR code with multiple devices before printing thousands of copies. Different phone cameras and apps may behave differently. Ensure the encoded data is exactly what you intended.



• Use high error correction for outdoor use: QR codes on billboards, vehicles, or product packaging face environmental damage (rain, scratches, fading). Set error correction to High (30%) to maintain scannability despite wear and tear.



• Maintain adequate contrast: QR codes need strong contrast between dark and light modules. Black on white works best. Avoid light gray on white or colors with similar brightness levels—these reduce scanability.



• Don't make it too small: Minimum recommended size is 2x2 cm (0.8x0.8 inches) for comfortable scanning from standard viewing distances. Larger codes (10x10 cm) work better for billboards or posters scanned from far away.



• Add a call-to-action: Don't assume people know to scan it. Add text like "Scan to connect to WiFi" or "Scan for menu" near the QR code. Conversion rates improve significantly with clear instructions.



• Use URL shorteners for tracking: If encoding URLs, use a service like bit.ly or your own domain shortener. This enables analytics (scan counts, locations, devices) and allows updating the destination URL without regenerating the QR code.



• Avoid dense data in small codes: More data creates more complex QR codes with smaller modules, making them harder to scan. For URLs over 100 characters, use a shortener. For long text, consider linking to a webpage instead.