Free Custom QR Code Generator Online
Create high-resolution custom QR codes online for free. Supports Website URLs, Wi-Fi networks (WPA/WPA2/WPA3), vCard contacts, emails, phone numbers, custom colors, and PNG/SVG export.
Key Features & Specifications
- Multiple QR Code types: URL, Text, Wi-Fi login, vCard contact, Email, Phone call, SMS
- Wi-Fi QR codes connect guests automatically without typing passwords
- Custom foreground and background color pickers
- Configurable error correction levels (L, M, Q, H) and resolution sizing
- Download in crisp PNG or scalable SVG vector formats for printing
QR Code Specifications, Error Correction & Best Practices
Quick Response (QR) codes are 2D matrix symbologies invented by Denso Wave in 1994, standardized under ISO/IEC 18004. Unlike 1D barcodes that encode data horizontally across bars, QR codes encode information in both vertical and horizontal dimensions using black square modules arranged on a white grid. They incorporate Reed-Solomon error correction algorithms, allowing them to remain fully readable even if up to 30% of the code surface is damaged, stained, or obscured.
| Error Correction Level | Damage Recovery Capacity | Recommended Use Case |
|---|---|---|
| Level L (Low) | Approx. 7% restoration | Clean digital displays, mobile screens, high density data |
| Level M (Medium) | Approx. 15% restoration | Standard marketing flyers, brochures, website links (Default) |
| Level Q (Quartile) | Approx. 25% restoration | Outdoor posters, packaging, industrial environments |
| Level H (High) | Approx. 30% restoration | Codes with central logos, rough surfaces, vehicle decals |
WiFi QR Code Format Explained
WiFi QR codes use the standardized MECARD format string: `WIFI:T:WPA;S:MyNetwork;P:MyPassword;;`. When scanned by an iOS or Android smartphone camera, the device automatically prompts the user to join the Wi-Fi network with zero manual password typing.
- Ensure high color contrast between foreground modules and background (e.g. dark blue on white).
- Download in SVG format for infinite vector scaling without pixelation on large print banners.
- Test your QR code with multiple smartphone camera apps before printing bulk materials.
How to Use Custom QR Code Generator
Follow these easy steps to process your files in seconds.
Step 1
Select the QR code type (e.g. Website URL, Wi-Fi Network, Contact Card).
Step 2
Enter your details (link, network name & password, or contact info).
Step 3
Customize foreground/background colors and resolution.
Step 4
Download your ready-to-scan QR code as PNG or SVG.
Frequently Asked Questions
Common questions about usage, privacy, and file limits.
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