QR Code Generator
Create high-resolution QR codes online. Customize foreground and background colors, preview instantly, and download PNG graphics.
Step-by-Step Instructions
Select Content Type
Choose URL / Website, Plain Text, Wi-Fi Network credentials, vCard Contact, Email, or SMS message.
Enter Payload Data
Input the target destination URL, network SSID/password, or contact details.
Customize Styling & Error Correction
Select QR color, background color, error correction level (L, M, Q, H), and pixel dimensions.
Download Vector or Raster QR Code
Download your high-resolution QR code as SVG vector, PNG, JPEG, or WebP.
Key Features & Capabilities
- ISO/IEC 18004 standard QR Code generation supporting alphanumeric, byte, and numeric encoding
- Reed-Solomon error correction levels: Low (7%), Medium (15%), Quartile (25%), High (30% damage recovery)
- Wi-Fi QR code generator with automatic WPA/WPA2/WPA3 network connection formatting
- Vector SVG download and high-resolution PNG (up to 4000x4000px) for professional print design
Frequently Asked Questions
How does Reed-Solomon Error Correction work in QR codes?
QR codes use Reed-Solomon error correction algorithms to restore lost data if the code is torn, smudged, or partially obscured: **Level L**: recovers up to 7% damage; **Level M**: recovers 15%; **Level Q**: recovers 25%; **Level H**: recovers up to **30% damaged or obscured area**. Level H is required when embedding a logo in the center of a QR code.
What is the maximum data capacity of a standard QR code?
The theoretical maximum capacity for a Version 40 QR code is: **7,089 numeric characters**, **4,296 alphanumeric characters**, or **2,953 raw binary bytes**. However, simpler payloads (short URLs under 100 characters) generate cleaner codes with larger module dots that scan faster from greater distances.
Do generated QR codes expire?
Static QR codes encode the data directly into the matrix pattern and **never expire**. They work forever without requiring internet servers or subscription fees. (Dynamic QR codes that route through a third-party redirection service can expire if that service goes offline).
How do you format a Wi-Fi QR code for instant smartphone connection?
Wi-Fi QR codes use the standardized format: `WIFI:T:WPA;S:MyNetworkSSID;P:MyPassword;;`. When scanned with an iPhone or Android camera, the operating system displays a prompt: *'Join MyNetworkSSID Network?'* and connects automatically without typing.
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